How to determine file type in Linux?

Question

linux

There is an archive file, but when I try to open it through ark, it says that the format is not supported. The file called Telltale games.tar.7z, the p7z module is installed in the system. On Windows 7-zip also cannot open it, the
hex editor shows the file header as:

HBEGIN:oc_encryption_module:OC_DEFAULT_MODULE:cipher:AES-256-CTR:signed:true:HEND

Do I understand correctly that this is also an encrypted archive? And how can I open it? (I don’t mean to break the password, but at least to be prompted to enter it, I suddenly remember)
File

Answer 1

Search
www.google.ru/search?q=oc_encryption_module&newwin...
It gives an interesting page
https://docs.nextcloud.com/server/13/developer_man...
So there is a suspicion that you are trying to hack some cloud service)))

Answer 2

man file