Scammers/hackers know how to retrieve the details of the wallet. If you create a new they will send unwanted coins to the new ones also. The best way is to ignore such coins that you are not aware of even I would say we should not try to swap and sell unknown coins. If do so then most probably your wallet will be at risk.
I have not experience a new token in my wallet before and if i do notice a token in my wallet and i dont know the way about of the token i will prefer to make research of the token first, and if the token is tradeable or can be easily swapped to sellable coin, after the transaction of swamping the token to a valuable coin, the best thing i will do is to change wallet to avoid in penetration of in my wallet.