The file includes .mkv (a video format) to make you think it is a movie.
The uploader wants you to click the file, thinking you are playing a video, when you are actually running a script or program that could infect your system. 2. Immediate Safety Steps Bad_Intention_2.mkv.mp4
The actual extension is .mp4 . However, in many malicious cases, files like this are actually executables (like .exe or .scr ) where the final extension is hidden by Windows settings. The file includes
If you have verified the file is safe and it truly is just a poorly named video file: thinking you are playing a video