How to stop deceptive events from being added to Calendar

Also Known As: iPhone calendar spam
Type: Mac Virus
Distribution: Moderate
Damage level: Medium

How to remove deceptive Calendar events from mobile Apple devices

What are deceptive Calendar events?

There are numerous dubious websites that contain deceptive advertisements, demand permission to show notifications, and display deceptive pop-up windows and other intrusive content that should not be clicked. Furthermore, many people have recently noticed that unwanted events are added to the Calendar application on their mobile Apple devices. Research shows that these events are usually added after clicking pop-up windows, notifications, etc., whilst trying to close them.

Deceptive Calendar Events scam

Once the Calendar app has the unwanted events added, it starts to display deceptive notifications designed to open various untrusted websites. Research shows that the notifications open scam websites, pages that contain deceptive advertisements, advertise dubious software, are related to gambling, pornography, adult dating, and so on. We strongly recommend against trusting any notifications or websites that are opened through them - they might be designed to deceive visitors into installing unwanted software, providing personal information or even paying for untrusted apps of 'services' (such as remote removal of non-existent viruses). Trusting these web pages can lead to unwanted downloads and installations, problems relating to privacy, browsing safety, monetary loss, identity theft and other serious problems. If unwanted events are already added to the Calendar, this problem can be resolved by following the steps provided below.

Threat Summary:
Name iPhone calendar spam
Threat Type Phishing, Scam, Malware, Virus.
Symptoms Your mobile Mac device becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites.
Related Domains

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Distribution methods Deceptive pop-up ads, notifications, dubious websites.
Damage Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information.
Malware Removal (Mac)

To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
▼ Download Combo Cleaner for Mac
To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Examples of web pages that might be opened through added events are safebrowsing[.]network, manualchecker[.]com and bestantius[.]com. These websites often trick visitors into installing dubious software by claiming that the device is infected with viruses. In fact, deceptive events in Calendar can lead to various other untrusted sites. In any case, none should be opened.

How did potentially unwanted applications install on my computer?

Unwanted software is often downloaded and/or installed when people intentionally or accidentally click ads, notifications or other deceptive content. Rogue ads execute certain scripts to achieve this, however, unwanted downloads and installations occur only when people click a dubious ad, notification, etc. Therefore, deceptive ads, pop-up windows, notifications, and so on cannot cause downloads/installations without first being clicked. This also applies to ads that are are displayed while browsing the web on mobile and desktop devices.

How to avoid installation of potentially unwanted applications

To prevent unwanted apps from being downloaded and installed, download software from official websites and through direct download links. Do not use third party downloaders, installers, unofficial websites, Peer-to-Peer networks or other such tools to download or install software. Check "Custom", "Advanced" and other similar settings of any download/install setup and deselect any additionally-included apps. To avoid unintentional downloads and installations, do not to click advertisements (notifications, pop-up windows) that are displayed on dubious web pages. Once clicked, they redirect users to untrusted websites or cause unwanted downloads/installations. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

Screenshot of deceptive events added to Calendar:

deceptive calendar events second example

Another screenshot of deceptive events added to Calendar:

deceptive calendar events third example

To remove rogue calendars that deliver notifications, promote dubious websites and fill Calendar with unwanted events in mobile Apple devices, follow these steps:

First go to your Home screen, find "Calendar", and then tap "Calendars" at the bottom of the screen:

Removing rogue calendars from mobile Apple devices (step 1)

Then find all suspicious Calendar entries (they are typically named after the promoted websites and the colors of their icons match those of the unwanted events) and tap the "i" symbol within a circle. Then scroll down to the very bottom of the screen, tap "Delete Calendar" and confirm it:

Removing rogue calendars from mobile Apple devices (step 2)

Users of older iOS versions should also perform the following steps:

  • 1. Go to "Settings"
  • 2. Select "Passwords & Accounts"
  • 3. Select "Subscribed Calendars" in the "Accounts" section
  • 4. Search for any dubious Calendars, tap them and select "Delete Account"

After removing the suspicious Calendars, you should clean the browsing data and ensure that pop-up blocking and fraudulent website warning settings are enabled:

To enable pop-up blocking, fraudulent website warnings, and remove web browsing data in mobile Apple devices, follow these steps:

First, go to "Settings", and then scroll down to find and tap "Safari".

enable pop-up blocking step 1

Check if the "Block Pop-ups" and "Fraudulent Website Warning" toggles are enabled. If not, enable them immediately. Then, scroll down and tap "Advanced".

enable pop-up blocking step 2

Tap "Website Data" and then "Remove All Website Data".

enable pop-up blocking step 3

Instant automatic Mac 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 Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for Mac By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Quick menu:

Video showing how to remove adware and browser hijackers from a Mac computer:

Potentially unwanted applications removal:

Remove potentially unwanted applications from your "Applications" folder:

mac browser hijacker removal from applications folder

Click the Finder icon. In the Finder window, select "Applications". In the applications folder, look for "MPlayerX", "NicePlayer", or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.

Remove iphone calendar spam related files and folders:

Finder go to folder command

Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder...

step1Check for adware-generated files in the /Library/LaunchAgents folder:

removing adware from launch agents folder step 1

In the Go to Folder... bar, type: /Library/LaunchAgents

removing adware from launch agents folder step 2
In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step2Check for adware generated files in the /Library/Application Support folder:

removing adware from application support folder step 1

In the Go to Folder... bar, type: /Library/Application Support

removing adware from application support folder step 2
In the “Application Support” folder, look for any recently-added suspicious folders. For example, “MplayerX” or “NicePlayer”, and move these folders to the Trash.

step3Check for adware-generated files in the ~/Library/LaunchAgents folder:

removing adware from ~launch agents folder step 1


In the Go to Folder bar, type: ~/Library/LaunchAgents

removing adware from ~launch agents folder step 2

In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step4Check for adware-generated files in the /Library/LaunchDaemons folder:

removing adware from launch daemons folder step 1
In the Go to Folder... bar, type: /Library/LaunchDaemons

removing adware from launch daemons folder step 2
In the “LaunchDaemons” folder, look for recently-added suspicious files. For example “com.aoudad.net-preferences.plist”, “com.myppes.net-preferences.plist”, "com.kuklorest.net-preferences.plist”, “com.avickUpd.plist”, etc., and move them to the Trash.

step 5 Scan your Mac with Combo Cleaner:

If you have followed all the steps in the correct order you Mac should be clean of infections. To be sure your system is not infected run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file double click combocleaner.dmg installer, in the opened window drag and drop Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates it's virus definition database and click "Start Combo Scan" button.

scan-with-combo-cleaner-1

Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays "no threats found" - this means that you can continue with the removal guide, otherwise it's recommended to remove any found infections before continuing.

scan-with-combo-cleaner-2

After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.

iPhone calendar spam removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove iphone calendar spam related Safari extensions:

safari browser preferences

Open Safari browser, from the menu bar, select "Safari" and click "Preferences...".

safari extensions window

In the preferences window, select "Extensions" and look for any recently-installed suspicious extensions. When located, click the "Uninstall" button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.

firefox browser iconRemove malicious plug-ins from Mozilla Firefox:

Remove iphone calendar spam related Mozilla Firefox add-ons:

accessing mozilla firefox add-ons

Open your Mozilla Firefox browser. At the top right corner of the screen, click the "Open Menu" (three horizontal lines) button. From the opened menu, choose "Add-ons".

removing malicious add-ons from mozilla firefox

Choose the "Extensions" tab and look for any recently-installed suspicious add-ons. When located, click the "Remove" button next to it/them. Note that you can safely uninstall all extensions from your Mozilla Firefox browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.

chrome-browser-iconRemove malicious extensions from Google Chrome:

Remove iphone calendar spam related Google Chrome add-ons:

removing malicious google chrome extensions step 1

Open Google Chrome and click the "Chrome menu" (three horizontal lines) button located in the top-right corner of the browser window. From the drop-down menu, choose "More Tools" and select "Extensions".

removing malicious Google Chrome extensions step 2

In the "Extensions" window, look for any recently-installed suspicious add-ons. When located, click the "Trash" button next to it/them. Note that you can safely uninstall all extensions from your Google Chrome browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.

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.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Removal Instructions in other languages
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
iPhone calendar spam QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of iPhone calendar spam on your mobile device.
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