does it find the redirector in your website files? Or "only" in the spotlight folder? The spotlight folder is an indexing folder. This means it stores all your files in a big reference, so that it can find them much more quickly when you search for it. Would it be possible for you to attach the detected file to your next reply?
Where was the trojan.tdss.7622 found? Can you name the file?
MAC is not malware free anymore, however the things that are listed here are Windows malware, that can not normally run on a MAC. So it would be important to know if you have, for example, Windows installed on that MAC as well? Are the detections in files from your website? If so, yes you are likely infecting people that come to visit.
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