Modders and developers pack updates into RARs to reduce download size. The random string (hrj01316473) might be a forum attachment ID or a Nexus Mods file reference.
If you have confirmed it is not part of any legitimate software (e.g., after backing up, scanning, and consulting IT), you can delete it. However, do not delete if it resides inside a trusted application folder without verification. hrj01316473rar upd
Attackers frequently use:
Given the lack of official references, treat this file with suspicion until proven otherwise. Modders and developers pack updates into RARs to
Do not attempt to open the file directly from an email or instant message. Do not run any executable inside, even if it claims to be setup.exe, patch.exe, or update.bat. Given the lack of official references, treat this