Use a tool like 7-Zip to "Test" the archive. This will list filenames without extracting them.
Without the ability to inspect the file directly, a write-up depends on the context of where you found it. Possible Contents
It may contain materials related to historian Yuval Noah Harari , such as transcripts or research papers.
It might be a custom backup for a specific application like Frontu or Plaky . Next Steps for Analysis