You can upload the file to VirusTotal.com , a free service that scans files with over 70 different antivirus engines.
Right-click the file and use your security software (e.g., Windows Defender, Malwarebytes ) to scan it specifically. Jenifer.rar
RAR files are archives. Simply having it on your computer is usually safe, but extracting the contents can trigger malicious code. You can upload the file to VirusTotal