If the file is part of a puzzle or mystery (like an ARG), "looking into" it might mean more than just opening it:

Before opening, upload the file to VirusTotal to have it scanned by dozens of antivirus engines.

Some puzzles hide archives within other files. Using the Open Inside feature in 7-Zip can sometimes reveal nested data that standard extraction misses.

To "look into" a file like , you essentially need to view its contents without necessarily extracting everything first. Here is how you can do that across different platforms: 1. View Contents Without Extracting

how to find file info in not-first rar file? · Issue #56 · markokr/rarfile

If you want to see what is inside without fully unpacking it (which is safer if you're suspicious of the file):

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