Never, remember for the rest of your life, never use your bank account for dubious transactions.
This income is not worth your risks.
This money can be criminal, and you will be a member of the criminal community because you make a profit. They want to use you as a drop.
Yep, that's how you become a money mule:
https://en.wikipedia.org/wiki/Money_muleThere is a chance that this whole set up is perfectly (or at least mostly) innocent and that the counterparty has other, not necessarily illegal, reasons to be extra careful -- but chances are that there's something shady going on and the legal implications are definitely not worth the risk.