Since is likely a custom or private data archive, a general review would focus on the characteristics of the 7z format it uses: Format Overview
The 7z format is known for superior compression ratios, often outperforming ZIP and RAR formats by 2% to 10%. So_PackG.7z
The specific file does not appear to be a widely known public software package or a standard system file. However, because it uses the .7z extension , it is a compressed archive created using 7-Zip or similar software. Since is likely a custom or private data
“7zip is the best file extraction tool I've come across, and it's definitely safe.” Reddit · r/skyrimmods · 8 years ago because it uses the .7z extension
It supports strong AES-256 encryption , which can protect both the file content and the filenames themselves.