Malicious actors often rename harmful scripts or executables with double extensions (e.g., AgADpgkAApRVQFY.mkv.exe ) to trick users into opening them.

I can provide a more detailed security analysis with this info.

This file was originally uploaded to or downloaded from Telegram .

The .mkv extension indicates a Matroska Video container, which typically holds high-definition video, multiple audio tracks, or subtitles. ⚠️ Security Considerations

you discovered the file (e.g., specific folder path or chat group) The approximate file size

Opening the file may reveal the content the sender intended to share, but ensure your antivirus software is active before doing so. 🛠️ Recommendation

Only open the file if you recognize the Telegram chat or channel it originated from.

While rare, certain media players can be vulnerable to "buffer overflow" attacks triggered by specially crafted .mkv files.