This scam is not new and has claimed many victims. The scammers deliberately send fake coins with almost the same address to a random address, these scammers are indeed targeting those who don't want to bother and are careless who only copy the address from the transaction history, the victims consider this more practical even though the risk is very high if you copy the address through the transaction. I have participated in several airdrops and of course I use a new and different address but I am confused to see my new address receiving unclear coins, maybe the method is the same as the victim's experience as told by the OP.

The lesson we can learn from this case is to never take shortcuts in copying addresses through transaction history. It is better to copy your address from your wallet and then save it in notes so that when you want to make a transaction you can copy it from the notes, this method is more practical than copying through the transaction history. Keep in mind that scammers are getting more sophisticated every day, so you need to be careful in securing your assets and must always be vigilant because crypto is very vulnerable to hackers, fraud and so on which can cause us to lose assets.