Never trust nobody on the Internet.
It's definitely important to keep one's wits about themself online.
Always use VirusTotal on everyfile
before to use any kind of program, even from big company like IBM, Microsoft, Apple, etc. ALWAYS SCAN ALL file with VirusTotal.
VirusTotal is a useful resource for lookups of existing submissions (just search by checksum), but only because of the great volume of presumibly illegal submissions. VirusTotal isn't a replacement for a locally installed antimalware tool, as many of the files you will want to check can't be uploaded without violating VirusTotal's terms of service, and potentially the license of the file you're checking.
You retain all ownership rights in any submission you may make and you confirm that you are the original owner of any content you submit or that you have the necessary rights and permissions to authorise us to use your content. In particular, you promise that you have obtained the permission of all of the people featured or referred to in the Content (and if they are under 18 their parents or guardians as well) to our use of the Content on the Services. You agree to give us evidence of all such rights and permissions if so requested by us.
When you upload or otherwise submit content, you give VirusTotal (and those we work with) a worldwide, royalty free, irrevocable and transferable licence to use, edit, host, store, reproduce, modify, create derivative works, communicate, publish, publicly perform, publicly display and distribute such content.
Basically, VirusTotal wants authors to submit their work, which doesn't happen much because many authors aren't willing to give VirusTotal "and those [VirusTotal works] with" an "irrevocable and transferable licence to use [...] , modify, create derivative works, [...] and distribute" their works. I suspect the reasons that VirusTotal is as popular as it is are that many people either don't read the terms of service, or have no qualm with breaching them.
EDIT: To be clear this isn't a shot at your tip. I agree it's important to scan all downloads. I'm justing pointing out that in my opinion VirusTotal isn't the best option to use.
Edited by hollowface, 12 August 2016 - 02:41 PM.