: Use a tool like MediaInfo or ExifTool to view the "encoded date," "writing library," and "GPS coordinates" (if any) to determine its origin.
: Run the file through VirusTotal to check if the hash matches any known malicious signatures. 5f62dfa42276cc69b1de0_source.mp4
If you have encountered this file on a personal device or an unknown server: : Use a tool like MediaInfo or ExifTool