What is PDFConverterSearch4Free?
PDFConverterSearch4Free is rogue software categorized as a browser hijacker. It operates by making changes to browser settings to promote pdfconvertersearch4free.com (a fake search engine). Additionally, most browser hijackers have data tracking capabilities, which are employed to monitor users' browsing activity - PDFConverterSearch4Free is no exception to this.
Due to the dubious techniques used to proliferate browser hijackers, they are also classified as Potentially Unwanted Applications (PUAs).
Browser hijackers assign the addresses of fake search engines (e.g. pdfconvertersearch4free.com) as the homepage, default search engine and new tab/window URLs. These seemingly minor alterations significantly affect the browsing experience.
To elaborate, with PDFConverterSearch4Free installed, each new browser tab/window opened and search query typed into the URL bar redirects to pdfconvertersearch4free.com. Rogue search engines are seldom able to provide search results, and so they redirect to (or cause redirection chains ending with) genuine sites.
This is the case with the pdfconvertersearch4free.com web searcher, which redirects to the Yahoo (search.yahoo.com) search engine. Furthermore, browser hijackers can undo any changes users try to make to their browsers and/or restrict/deny access to the browser settings outright.
Therefore, recovering a hijacked browser is impossible without removing the software affecting it. As mentioned, PDFConverterSearch4Free can track data. It can record browsing activity (visited URLs, viewed pages, searched queries, etc.) and collect sensitive information extracted from it (IP addresses, geolocations and other details).
The gathered data is likely to contain personally identifiable information. Furthermore, browser hijacker developers often monetize this information by sharing it with and/or selling it to third parties (potentially, cyber criminals). In summary, the presence of data-tracking software on devices can result in serious privacy issues, financial loss and even identity theft.
To ensure device integrity and user safety, all dubious applications and browser extensions/plug-ins must be eliminated without delay.
|Threat Type||Browser Hijacker, Redirect, Search Hijacker, Toolbar, Unwanted New Tab.|
|Serving IP Address (pdfconvertersearch4free.com)||18.104.22.168|
|Affected Browser Settings||Homepage, new tab URL, default search engine.|
|Symptoms||Manipulated Internet browser settings (homepage, default Internet search engine, new tab settings). Users are forced to visit the hijacker's website and search the Internet using their search engines.|
|Distribution methods||Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers.|
|Damage||Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites.|
|Malware Removal (Windows)||
To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
Smashtab, LiveSportSearch, ConverterSearchTool, MagicMovieSearch and AnyRadioSearch are some examples of other browser hijackers. This software may seem legitimate and offers a broad range of "useful" functionality, however, despite how good the advertised features may sound, they are usually nonoperational.
This applies to most PUAs. The only purpose of these unwanted apps is to generate revenue for the developers. PUAs hijack browsers, force-open untrusted and malicious websites, run intrusive ad campaigns (adware), and collect private data.
How did PDFConverterSearch4Free install on my computer?
Some PUAs (including PDFConverterSearch4Free) have "official" download web pages. They are also distributed via download/installation set-ups of other software. This deceptive marketing method of packing normal programs with unwanted or malicious additions is termed "bundling".
Rushing download/installation processes (e.g. ignoring terms, using "Easy/Express" settings, etc.) increases the risk of unintentionally allowing bundled content into the system. Intrusive advertisements proliferate PUAs as well. When clicked, they can execute scripts to download/install rogue applications without users' consent.
How to avoid installation of potentially unwanted applications
You are advised to research all software before download/installation. Use only official and verified download channels. Unofficial and free file-hosting websites, Peer-to-Peer sharing networks (BitTorrent, Gnutella, eMule), and other third party downloaders commonly offer harmful and bundled content, and are therefore untrusted and should be avoided.
When downloading/installing, read the terms, study all possible options, use the "Custom/Advanced" settings and opt-out of additional apps, tools, features, and so on. Intrusive advertisements typically seem legitimate, however, they can redirect to dubious and malicious sites (e.g. gambling, pornography, adult-dating, and many others).
If you encounter ads or redirects of this kind, inspect the system and remove all dubious applications and browser extensions/plug-ins immediately. If your computer is already infected with PDFConverterSearch4Free, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this browser hijacker.
PDFConverterSearch4Free browser hijacker asking for various permissions:
Appearance of PDFConverterSearch4Free browser hijacker promoting pdfconvertersearch4free.com fake search engine (GIF):
Websites promoting PDFConverterSearch4Free browser hijacker.
IMPORTANT NOTE! Some of these deceptive sites ask to enable web browser notifications:
Therefore, before commencing, perform these steps:
Google Chrome (PC):
- Click the Menu button (three dots) on the right upper corner of the screen
- Select "Settings", scroll down to the bottom and click "Advanced"
- Scroll down to the "Privacy and security" section, select "Content settings" and then "Notifications"
- Click three dots on the right hand side of each suspicious URL and click "Block" or "Remove" (if you click "Remove" and visit the malicious site once more, it will ask to enable notifications again)
Google Chrome (Android):
- Click on the Menu button (three dots) on the right upper corner of the screen and click "Settings"
- Scroll down, click on "Site settings" and then "Notifications"
- In the opened window, locate all suspicious URLs and click on them one-by-one
- Select "Notifications" in the "Permissions" section and set the toggle button to "OFF"
- Click the Menu button (three bars) on the right upper corner of the screen
- Select "Options" and click on "Privacy & Security" in the toolbar on the left hand side of the screen
- Scroll down to the "Permissions" section and click the "Settings" button next to "Notifications"
- In the opened window, locate all suspicious URLs, click the drop-down menu and select "Block"
- Click the Gear button on the right upper corner of the IE window
- Select "Internet options"
- Select the "Privacy" tab and click "Settings" under "Pop-up Blocker" section
- Select suspicious URLs under and remove them one by one by clicking the "Remove" button
- Click the menu button (three dots) on the right upper corner of the Edge window
- Scroll down, find and click "Settings"
- Scroll down again and click "View advanced settings"
- Click "Manage" under "Website permissions"
- Click the switch under each suspicious website
- Click "Safari" button on the left upper corner of the screen and select "Preferences..."
- Select the "Websites" tab and then select "Notifications" section on the left pane
- Check for suspicious URLs and apply the "Deny" option for each
Instant automatic malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
- What is PDFConverterSearch4Free?
- STEP 1. Uninstall PDFConverterSearch4Free application using Control Panel.
- STEP 2. Remove PDFConverterSearch4Free browser hijacker from Google Chrome.
- STEP 3. Remove pdfconvertersearch4free.com homepage and default search engine from Mozilla Firefox.
- STEP 4. Remove pdfconvertersearch4free.com redirect from Safari.
- STEP 5. Remove rogue plug-ins from Microsoft Edge.
- STEP 6. Remove pdfconvertersearch4free.com redirect from Internet Explorer.
PDFConverterSearch4Free browser hijacker removal:
Windows 11 users:
Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.
Windows 10 users:
Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.
Windows 7 users:
Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.
macOS (OSX) users:
Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.
In the uninstall programs window: look for any recently installed suspicious applications (for example, "PDFConverterSearch4Free"), select these entries and click "Uninstall" or "Remove".
After uninstalling the potentially unwanted applications that cause browser redirects to the pdfconvertersearch4free.com website, scan your computer for any remaining unwanted components. To scan your computer, use recommended malware removal software.
PDFConverterSearch4Free browser hijacker removal from Internet browsers:
Video showing how to remove browser redirects:
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon (at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate "PDFConverterSearch4Free" and other recently-installed suspicious browser add-ons, and remove them.
Change your homepage:
Click the Chrome menu icon (at the top right corner of Google Chrome), select "Settings". In the "On startup" section, disable "PDFConverterSearch4Free", look for a browser hijacker URL (hxxp://www.pdfconvertersearch4free.com) below the “Open a specific or set of pages” option. If present, click on the three vertical dots icon and select “Remove”.
Change your default search engine:
To change your default search engine in Google Chrome: Click the Chrome menu icon (at the top right corner of Google Chrome), select "Settings", in the "Search engine" section, click "Manage search engines...", in the opened list look for "pdfconvertersearch4free.com", when located click the three vertical dots near this URL and select "Remove from list".
If you continue to have problems with removal of the pdfconvertersearch4free.com redirect, reset your Google Chrome browser settings. Click the Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plug-ins from Mozilla Firefox:
Click the Firefox menu (at the top right corner of the main window), select "Add-ons". Click on "Extensions" and remove "PDFConverterSearch4Free", as well as all other recently installed browser plug-ins.
Change your homepage:
To reset your homepage, click the Firefox menu (at the top right corner of the main window), then select "Options", in the opened window disable "PDFConverterSearch4Free", remove hxxp://pdfconvertersearch4free.com and enter your preferred domain, which will open each time you start Mozilla Firefox.
Change your default search engine:
In the URL address bar, type about:config and press Enter.
Click "I'll be careful, I promise!".
In the search filter at the top, type: "extensionControlled"
Set both results to "false" by either double-clicking each entry or clicking the button.
Computer users who have problems with pdfconvertersearch4free.com redirect removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active and click Safari menu, then select Preferences...
In the preferences window select the Extensions tab. Look for any recently installed suspicious extensions and uninstall them.
In the preferences window select General tab and make sure that your homepage is set to a preferred URL, if its altered by a browser hijacker - change it.
In the preferences window select Search tab and make sure that your preferred Internet search engine is selected.
Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge menu icon (at the top right corner of Microsoft Edge), select "Extensions". Locate any recently-installed suspicious browser add-ons, and remove them.
Change your homepage and new tab settings:
Click the Edge menu icon (at the top right corner of Microsoft Edge), select "Settings". In the "On startup" section look for the name of the browser hijacker and click "Disable".
Change your default Internet search engine:
To change your default search engine in Microsoft Edge: Click the Edge menu icon (at the top right corner of Microsoft Edge), select "Privacy and services", scroll to bottom of the page and select "Address bar". In the "Search engines used in address bar" section look for the name of the unwanted Internet search engine, when located click the "Disable" button near it. Alternatively you can click on "Manage search engines", in the opened menu look for unwanted Internet search engine. Click on the puzzle icon near it and select "Disable".
If you continue to have problems with removal of the pdfconvertersearch4free.com redirect, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Remove malicious add-ons from Internet Explorer:
Click the "gear" icon (at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently installed suspicious extensions, select these entries and click "Remove".
Change your homepage:
Click the "gear" icon (at the top right corner of Internet Explorer), select "Internet Options", in the opened window remove hxxp://pdfconvertersearch4free.com and enter your preferred domain, which will open each time you launch Internet Explorer. You can also enter about: blank to open a blank page when you start Internet Explorer.
Change your default search engine:
Click the "gear" icon (at the top right corner of Internet Explorer), select "Manage Add-ons". In the opened window, select "Search Providers", set "Google", "Bing", or any other preferred search engine as your default and then remove "PDFConverterSearch4Free".
If you continue to have problems with removal of the pdfconvertersearch4free.com redirect, reset your Internet Explorer settings to default.
Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.
Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.
Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.
In the opened window, select the Advanced tab.
Click the Reset button.
Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.
A browser hijacker is a type of adware infection that modifies Internet browser settings by assigning the homepage and default Internet search engine settings to some other (unwanted) website URL. Commonly, this type of adware infiltrates operating systems through free software downloads. If your download is managed by a download client, ensure that you decline offers to install advertised toolbars or applications that seek to change your homepage and default Internet search engine settings.
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