VirusTotal is one of the most popular options to scan files you consider that may be dangerous. It works online without installing anything. To simplify this process you can make use of VirusTotal Uploader.
Find out whether a file is dangerous or not.
With the guarantee of the best antivirus engines
As a complement to your usual antivirus (or even as an alternative at a given moment), VirusTotal Uploader lets you discover almost instantly if a file is susceptible of being malware or not. It's a small and lightweight tool that allows you to choose files downloaded to your Mac and scan them with dozens of trustworthy online antivirus engines.
Access to the best online security analysis service.
Thus, not only will you have the report provided by a single company, but also the guarantee offered by antivirus engines such as AVG, BitDefender, Agnitum, Avast, ClamAV and many others.
Before using any file, verify your security with VirusTotal Uploader for Mac.