Pf7.rar -

Supports AES encryption to protect contents with a password.

RAR archives are frequently used in phishing attacks to deliver malware. Need to open, create, or convert a RAR file? - WinZip PF7.rar

Because Windows does not natively support RAR extraction like it does for ZIP files, you must use a third-party utility: The native program for the RAR format. Supports AES encryption to protect contents with a password

A free, open-source alternative that can extract (but not create) RAR archives. PF7.rar

"PF7.rar" is a compressed RAR archive designed to store and condense multiple files into a single, smaller package.

A common commercial utility that also supports RAR extraction. Security Warning