—if you weren't looking for a specific file that matches this ID, it’s best to delete it and look for a verified source.

In the world of peer-to-peer sharing, files are often renamed to long strings of numbers and letters for a few reasons:

You can search the hash (the C3D6... string) on torrent indexing sites. This often reveals the original title and file list.

Some server scripts rename files to their hash to prevent duplicate uploads or naming conflicts. Is it safe to open?

If you do download it, do not open any files inside until you've run a deep scan with updated antivirus software. The Technical "Why"