I am most active on the statistics stack exchange (Crossvalidated). I run into the occasional graduate level student who's in completely over their head. I feel like I can "sniff" questions as being essentially reframed homework problems for large projects or theses where they haven't any idea how to proceed. Sometimes I venture an answer because I put thought into one aspect of the work, but when it inevitably doesn't satisfy the OP, they reach out to various means with the usual request, "Hey can you just do this for me the right way? I'll pay you."
Whether they are honest or not about this being school work or other work with a plagiarism clause, is it wrong to accept pay to do it for someone else? It seems like the language around plagiarism faults the one who submits it as their own work, but I worry I may blacken my name within circles if it eventually comes about that I did the work submitted as someone else's.