I would like to propose a solution about these newbies that don't do anything than damaging and spamming the forum. Once a newbie creates a new topic, the moderation team must approve it first. I wouldn't suggest posts generally because there may be some honest newbies that face an issue. Just for their topics.
This would be a lot of work for the moderators and would require them to be online 24/7 which is very much undesirable for anyone. Having lights steadily flashing your eyes is a danger to health.
I didn't say that moderators have to detect the files. Of course not, that's the last thing a mod should do, but you see files like I mentioned are surely malwares, you don't have to download them.
Restricting newbies from posting links will only damage the honest ones. The spammers will find another way to share their scammy links. (e.g PERFECTCASINO .GAMES)
This feels like a direct contradiction of the above #Yourself. I don't see how they are to approve the topics before public review if they have the freewill to create topics directly on the boards. Or maybe I'm not getting you correctly but, so long as they are allowed to post contents directly on the boards, the result is always going to be same as now. Hence, it's up to users discretion on the links they click.
For a fact, newbies don't really mean your new to the forum as some could be Alts of existing or previously band users hence, a user reviewing any suffisticated content posted by a user should be very cautious as to how is the newbie so knowledgeable at that beginner stage and also with the knowledge that Alt accounts are mostly used to scam others as it means very little to the users, you exercise a lot of caution in accessing files on such post.