It is important to clarify from the outset: The keyword phrase "black hawk down 2001 720p bluray x264 dual audio install" is a hybrid search string—likely a remnant from early 2010s torrent or file-sharing forums—that mixes media specifications with an action verb ("install") incorrectly applied to a video file.
Movie.Name.Year.Resolution.Source.Codec.Audio.Group black hawk down 2001 720p bluray x264 dual audio install
A: Delete it immediately. Run a full antivirus scan. Real MKV files do not have double extensions. It is important to clarify from the outset: