To see what is inside "AN (3).rar," you will need an extraction utility since Windows and macOS do not always support RAR files natively:
Most web browsers automatically add "(1)", "(2)", or "(3)" to a filename if you download the same file multiple times to the same directory. AN (3).rar
Use an online scanner like VirusTotal to check the file against multiple security databases before extracting. To see what is inside "AN (3)