Files with these types of names found on file-sharing sites are frequently associated with malware or spam.
The format ( B2846-22hbgfup.rar ) appears to be a generic, likely encrypted or randomly generated filename often used for archived files.
Where did you this file (e.g., a specific website or email)? What was it supposed to be? I can help check for threats if I know where it came from.
It is strongly advised this file unless you are absolutely certain of its source. Do you have more context ?