Yeah, I have those occasions, too, where I have to unwittingly pick up someone else's reports by nuking newbies. Especially a lot of such cases when the spamming starts in the form of topics with malware links. Well, I think there's nothing wrong with that, we're all doing the one thing 
As long as the malware is gone or at least been trashed, that's what we're here for. I'm not bothered if someone takes my reports, I think that's the wrong attitude to have. When it comes to malware especially, that just needs to be dealt with as soon as possible to mitigate the damage. Hence, sometimes I just move it to the trash can when I can't nuke the user myself, and then allow the global moderators to see the report, and deal with it.