: If you don't want to upload the file, you can calculate its SHA-256 hash and search for that string online. This is a unique "fingerprint" that remains the same even if the filename is changed.
To help me write a more specific blog post for you, could you tell me or what you believe it is supposed to contain?
: Cybercriminals frequently use "gibberish" or non-standard character sets to bypass simple text-based filters.
: Upload the file (or the URL where you found it) to VirusTotal . It will check the file against over 70 different antivirus engines.