X64a.rpf Download Online

I remember that in modding communities for games like GTA V, they often use file formats like .rpf which stand for Rockstar's file format. These files contain resources like models, textures, etc. So X64a.rpf might be a specific mod file. Let me verify if this is a known file. Searching online, I see that some modding tools like OpenIV or Menyoo use .rpf files. However, I need to be careful because there are malicious files that could be disguised as mod files.