You are thinking it wrong about malware in pictures. They don’t act like an executable rather then injecting instructions to an executable program you are opening your picture in. In that case you don’t need the +x flag on your file. Think of it as a Trojan horse
https://gizmodo.com/malware-images-virus-photos-pictures-how-block-antiviru-1849572516 If you are more interested
Not at all. I work with development of various kinds and have my desk close to our senior it security specialist he says that we get daily that kind of stuff in our emails so I don’t see why they should exist less on pirated torrents