: If this was a shared clip from a friend on a messaging app, the hash is likely just the app's internal way of indexing the video.
: If this file appeared in a "Downloads" folder unexpectedly, it may have been a cached video from a web browser or an automated app update.
: Upload the file (or search for the hash) on VirusTotal . This service will check the file against over 70 antivirus engines to see if it contains hidden scripts or exploits.