Do you have on where you found this file or what it's supposed to contain?
When a file is uploaded or downloaded between systems using different character sets (like UTF-8 vs. Windows-1251), the metadata can break, turning a standard title into a string of random characters and numbers. Do you have on where you found this
Be extremely cautious before opening or downloading a .rar file with a corrupted name from an untrusted source. These files are common vectors for malware, ransomware, or trojans . If you didn't expect this file or don't know the sender, it is best to delete it without extracting its contents. the metadata can break
Sometimes files on peer-to-peer networks or obscure forums are named with random strings to avoid automated copyright or security filters. Do you have on where you found this