If you are concerned it might be malicious, I strongly recommend you scan it using before doing anything else.
Open the folder where the file is, and try to look at the file size . A tiny file is likely a text file or image; a very large file could be software or video. Download 1341484 rar
Never open or extract a file from an unknown or untrusted source. Scan the file with antivirus software (like VirusTotal ) before attempting to open it. How to Find Out What It Is If you are concerned it might be malicious,