I have a 8 KB mp3 file in my Redmi smartphone (MIUI 13) that won't go away. If I delete it, it returns after a couple of days. Before I knew it as a potential threat, I did try to open it a couple of times. Opening it doesn't do anything. No malicious activity as a result of that has been noticed by me either (at least as of yet).
A general scan from the app UI doesn't yield anything malicious. But how do I scan that particular file in Bitdefender Mobile Security?