https://www.virustotal.com/en/
If you search for "online virus file scan" you will find several like the one above. You upload the file to them and they scan and give you the results. For the occasional torrent file, that may be all you need.
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Most times this issue comes up here, we have a whole host of forum contributors who will just flatly say "You don't need AV on a Mac." I think that is short sighted and an oversimplification of the issue.
At this point, there are not any reports of actual Mac viruses out there in circulation, so this leaves adware and malware as the big threat. Your Mac has
XProtect built in to scan downloaded files for malware, but Apple has in the past been
a little slow to update this protection.
Running an AV app may not stop you from getting malware/adware, but the hope is if you do get infected the AV app will at some point alert you to the problem. The example I use is good old Uncle Bob who has no idea about any of this and you are his tech support. You just tell Uncle Bob if he gets an AV alert popup to give you a call. Now none of this has stopped him from getting the malware, but at least it tells Uncle Bob to give you a ring because there is a problem. I think there is value in that.
I think you need to stop and ask what the user is doing on their Mac and what is the users level of computer sophistication (like Uncle Bob). Like I mentioned in my reply earlier, I think if you are installing apps from risky sources you should run an AV app. Or if you are exchanging files with Windows users, you should run an AV app.
So I am not at all against running AV on a Mac and I think in some cases it is a good idea. Just depends on the user and what they do with their Mac.
I hope this helps and would welcome any feedback/discussion.
