It is so don't deposit anything. Depositing funds does not in any way help in proving that the coins are clean.

Here are cases with similar scam method, there's a lot more as it is indeed a common one but im not gonna dig all of them so-
https://bitcointalk.org/index.php?topic=5155843
https://bitcointalk.org/index.php?topic=5163784
https://bitcointalk.org/index.php?topic=5187033

Consider your kyc info leaked (