The | Painter1.mkv.mp4

If this file is part of an online investigation (like those found on Reddit's r/ARG ), look for hidden data:

Double extensions are a classic trick used by malware to hide an .exe or .scr file as a video. The Painter1.mkv.mp4

Before opening, run the file through VirusTotal to ensure it isn't an executable disguised as a video. If this file is part of an online