In US, deed is public (grantor name, grantee name, property id). That’s probably how the scammers knew that you are involved in a recently recorded deed, and offered to send you a copy if you pay them.
Also, don't buy a car, either; that also generates a significant volume of incoming scams & fraud, although most of that is in the snail mail. (But "at least" there I am the person in the transaction … I guess?
But fraud is still fraud.