: Since the name is randomized, think back to where you downloaded it. Was it from a game development site, a specific user on a forum, or an automated email?

: If you are sure it is safe, use a utility like 7-Zip or WinRAR . Once opened, the contents (such as a ReadMe text file or specific folder structures) will likely give you a better idea of what the "guide" should be.

: Before extracting, upload the file to VirusTotal to check it against multiple antivirus engines.