Regardless of the name, any file ending in .rar should be handled with caution if the source is unknown:
A security provided to customs authorities to cover potential duties and taxes on imported goods. Security Risks of .rar Files CGU.rar
Modern malware can sometimes hide malicious code within filenames inside a RAR archive to bypass standard antivirus scans. Safety Recommendations What is CGU? (Customs Comprehensive Guarantee) Regardless of the name, any file ending in