One of the oldest tricks in cybercrime is hiding malware inside a popular file name. A file downloaded under the name NWOLeaks.com-Niks-2.mkv might actually be a double-extension file, such as NWOLeaks.com-Niks-2.mkv.exe . If a user runs the file, it executes malware that can compromise the host operating system. Stealer Malware
However, I don’t have any verified information about that specific file. Based on the naming pattern, it could be: NWOLeaks.com-Niks-2.mkv