Usually, when someone asks for a "write-up" of a specific file like this, it’s related to one of the following:
If the file is password-protected, you can often use tools like 7-Zip for extraction or John the Ripper if you need to recover a forgotten password. BBMJ8.7z
You’re looking for a report on what the contents do when executed. Usually, when someone asks for a "write-up" of
(e.g., extracting a password-protected file, analyzing a script inside, or finding a hidden message). extracting a password-protected file
7-Zip is free software with open source.