Many password-protected archives claiming to contain high-end games for mobile (like PPSSPP versions of GTA 5) or highly compressed versions are often non-functional or may contain malware. In-Game Passwords:

Since many kids couldn't afford the actual game or the console to run it, they turned to these "New" uploads. They hoped that somehow, someway, a high school student had managed to compress a 60GB game into a 50MB file that could run on integrated graphics. Spoiler alert: it was usually a virus, a corrupted file, or a modded GTA San Andreas with a low-poly map of Los Santos.

If you just want to play GTA 5 with mods, here are safer, more reliable options:

Based on user reports and community discussions, the following passwords have been associated with this specific file: