Polyhedrical.app

Polyhedrical.app is a macOS adware from the Pirrit family. Its purpose is to display intrusive pop-up advertisements and redirects, while also potentially collecting browsing data. Although it does not encrypt files like ransomware, it compromises privacy and affects system performance.

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Threat Overview

Field	Details
Threat type	Adware, Mac malware
Associated domain	Polyhedrical.app (Pirrit family)
Detection names	Avast: MacOS:Pirrit‑CH [Adw], ESET: OSX/Adware.Pirrit.BP, Combo Cleaner: Adware.MAC.Pirrit.KF
Symptoms of infection	Slowed Mac performance, pop-up ads, browser redirects
Damage & distribution	Tracks browsing, serves ads, may expose users to scams; spreads via deceptive pop-ups, software bundling, P2P downloads
Danger level	Medium – privacy and performance risk
Removal tool	SpyHunter (recommended) – Download SpyHunter

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Threat Evaluation

How I Got Infected

Polyhedrical.app often gets installed when users unknowingly agree to bundled installations while downloading freeware or fake system updates. It can also be triggered by deceptive pop-up ads pretending to be legitimate system alerts.

What It Does

Once installed, this adware modifies browser settings to push unwanted advertisements, banner pop-ups, and redirect users to sponsored or potentially harmful websites. It can track user activity, including visited URLs, IP addresses, and search queries. This data is typically monetized through advertising networks or sold to third parties.

Should You Be Worried for Your System?

Yes. Although Polyhedrical.app is not destructive in the way ransomware or trojans are, it opens the door to more severe cybersecurity risks. Its presence indicates a compromised system, and it can act as a delivery mechanism for more dangerous malware types. It significantly disrupts user experience, slows down system operations, and violates user privacy.

Method 1: Manually Removing Adware from Your Mac

Step 1: Uninstall Suspicious Applications

1. Open Finder and navigate to Applications.
2. Carefully review the list and look for applications you don’t recognize or didn’t install.
3. Drag any suspicious applications to the Trash.
4. Empty the Trash to ensure they’re permanently removed.
5. Open System Preferences > Users & Groups > Login Items.
6. Remove any unknown startup programs by selecting them and clicking the - button.

Step 2: Remove Unwanted Browser Extensions

Safari

1. Open Safari and click Safari > Preferences > Extensions.
2. Look for any extensions you don’t recognize and uninstall them.
3. Go to History > “Clear History” to remove traces of adware-related activity.

Google Chrome

1. Click the three-dot menu in the top-right corner and select Extensions.
2. Find any unfamiliar extensions and remove them.
3. Reset Chrome by going to Settings > Reset settings > “Restore settings to their original defaults.”

Mozilla Firefox

1. Click the three-line menu and go to Add-ons and themes.
2. Remove any unknown extensions.
3. Reset Firefox via Help > More troubleshooting information > “Refresh Firefox.”

Step 3: Delete Malicious Files and Folders

1. Open Finder, press Shift + Command + G, and enter the following locations:
   • ~/Library/Application Support/
   • ~/Library/LaunchAgents/
   • ~/Library/LaunchDaemons/
   • ~/Library/Preferences/
2. Look for suspicious files and remove them.

Step 4: Clear Your DNS Cache

1. Open Terminal.
2. Type the following command and hit Enter:
3. Enter your administrator password if prompted.

Step 5: Restart Your Mac

Restart your Mac to finalize the removal process.

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Method 2: Automatically Remove Adware with SpyHunter for Mac

If you prefer a hassle-free solution, SpyHunter for Mac can detect and eliminate adware efficiently.

Step 1: Download SpyHunter

Click the link below to download SpyHunter for Mac: Download SpyHunter Here.

Step 2: Install and Set Up SpyHunter

1. Open the downloaded .dmg file.
2. Drag SpyHunter into the Applications folder.
3. Launch SpyHunter and allow it to update its malware definitions.

Step 3: Run a Full System Scan

1. Open SpyHunter.
2. Click Start Scan.
3. Wait for the scan to complete and review the detected threats.
4. Click Fix Threats to remove any adware found on your system.

Step 4: Restart Your Mac

Once SpyHunter has completed the removal, restart your Mac to ensure all traces of adware are gone.

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Conclusion

Polyhedrical.app is a persistent macOS adware threat that hijacks browsers, delivers intrusive advertisements, and compromises privacy. It spreads through deceptive installation tactics and bundled software. Removing it is essential to restoring secure and stable system performance.

Use SpyHunter to scan and remove this threat completely. This adware can evolve into a broader system security concern if left unaddressed.