Ironically, the creators of .pak files have a less robust verification tool, but it exists.

When downloading games or applications built with the Unreal Engine, you may encounter Pakchunk0-windowsnoeditor.pak files as part of the download. Here are some points to consider:

Executable files (.exe) aren't the only things that can carry malware. While .pak files are data archives, downloading them from unverified sources is a security risk. Hackers can bundle malicious scripts or corrupted data that exploits vulnerabilities in the game engine.