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PDFDEFAULT Adware

Also Known As: feed.baboom.audio redirect
Type: Adware
Damage level: Medium

What is PDFDEFAULT?

PDFDEFAULT is a deceptive application that falsely claims to significantly enhance the Internet browsing experience. On initial inspection, PDFDEFAULT may seem legitimate and useful, however, this application displays various intrusive online advertisements, collects various data types, and causes unwanted browser redirects.

Furthermore, it often infiltrates systems without users' permission. For these reasons, it is classed as adware and a potentially unwanted program (PUP).

PDFDEFAULT adware

Following infiltration, PDFDEFAULT causes unwanted browser redirects to feed.baboom.audio. This is done without users' consent. Continual unwanted browser redirects significantly diminish the Internet browsing experience. In addition, PDFDEFAULT generates various intrusive online advertisements that do not originate from visited websites.

To display pop-ups, banners, and other similar advertisements, PDFDEFAULT uses a 'virtual layer' - a tool that enables placement of third party graphical content on any site. The ads often conceal underlying content of users' visited websites and often redirect to malicious websites.

Thus, clicking them is risky and can lead to further computer infections. Furthermore, PDFDEFAULT gathers information relating to Internet browsing activity including IP addresses, website URLs visited, pages viewed, and search queries.

The data might contain personally identifiable information that developers of PDFDEFAULT share with third parties who misuse private data to generate revenue. Thus, the presence of an information-tracking app on your system can lead to serious privacy issues or even identity theft. We strongly advise you to remove PDFDEFAULT from your system immediately.

As with other adware-type applications, PDFDEFAULT shares many similarities with many other bogus applications such as Windows Range Manager, CurveLayer, BrowsingGuard, and NetSecure. All offer different functionality, however, their behavior is identical.

The purpose of adware is to generate revenue for the developers. Rather than providing any value for regular users, PDFDEFAULT, and other similar applications, cause unwanted browser redirects, collect personal data, and deliver intrusive advertisements. All claim to enhance the web browsing experience merely in attempts to trick users to install.

How did PDFDEFAULT install on my computer?

Developers promote PDFDEFAULT using a deceptive marketing method called "bundling". Research shows that many users do not express enough caution when downloading and installing software. Aware of this, developers, hide potentially unwanted programs within the "Custom/Advanced" settings of these procedures.

Skipping this section often leads to inadvertent installation of potentially unwanted programs such as PDFDEFAULT. In doing so, users expose the system to risk of various infections and compromise their privacy.

How to avoid installation of potentially unwanted applications?

To prevent this situation, be cautious during the download/installation processes. Select the "Custom" or "Advanced" settings, analyze each step, decline all offers to download/install additional applications, and opt-out of those already included. The key to computer safety is caution.

Deceptive free software installer distributing PDFDEFAULT adware:

Rogue installer promoting PDFDEFAULT

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Quick menu:

PDFDEFAULT adware removal:

Windows 11 users:

Accessing Apps and Features in Windows 11

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:

Accessing Programs and Features (uninstall) in Windows 8

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:

Accessing Programs and Features (uninstall) in Windows 7

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:

Uninstall app in OSX (Mac)

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.

PDFDEFAULT adware uninstall via Control Panel

In the uninstall programs window, look for "PDFDEFAULT 1.0", select this entry and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted program that causes PDFDEFAULT ads, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove PDFDEFAULT adware from Internet browsers:

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing PDFDEFAULT ads from Internet Explorer step 1

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Manage Add-ons". Look for "lePDFDEFAULTPlugin.BHO", select this entry and click "Remove".

Removing PDFDEFAULT ads from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the feed.baboom.audio 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.

Resetting Internet Explorer settings to default on Windows XP

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.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing PDFDEFAULT  ads from Google Chrome step 1

Click the Chrome menu icon Google Chrome options icon (at the top right corner of Google Chrome), select "Tools" and click "Extensions". Locate "PDFDEFAULT", "Baboom Search", select these entries and click the trash can icon.

Removing PDFDEFAULT ads from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the feed.baboom.audio redirect, reset your Google Chrome browser settings. Click the Chrome menu icon Google 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.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plug-ins from Mozilla Firefox:

Removing PDFDEFAULT ads from Mozilla Firefox step 1

Click the Firefox menu firefox menu icon (at the top right corner of the main window), select "Add-ons". Click "Extensions", in the opened window, remove "PDFDEFAULT".

Removing PDFDEFAULT ads from Mozilla Firefox step 2

Optional method:

Computer users who have problems with feed.baboom.audio redirect removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

removing adware from safari step 1 - accessing preferences

Make sure your Safari browser is active, click Safari menu, and select Preferences....

removing adware from safari step 2 - removing extensions

In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.

Optional method:

Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge (Chromium) logoRemove malicious extensions from Microsoft Edge:

Removing adware from Microsoft Edge step 1

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.

Removing adware from Microsoft Edge step 2

Optional method:

If you continue to have problems with removal of the feed.baboom.audio redirect, reset your Microsoft Edge browser settings. Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge) and select Settings.

Microsoft Edge (Chromium) reset step 1

In the opened settings menu select Reset settings.

Microsoft Edge (Chromium) reset step 2

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.

Microsoft Edge (Chromium) reset step 3

  • If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.

Summary:

declining installation of adware while downloading free software sampleCommonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

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Software uninstall instructions
Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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