very possible. if they collected a significant number of people's IDs, why not sell such a database? Also asking for passing KYC (Know Your Customer) personal information and ID, possible that it is just an attempt to stall for time or maybe give up and leave them alone. there are various reasons why someone does not want or cannot give personal info, even if it is some reliable service nor scammers like this.
If I understand correctly, are you said about withdrawing something from there? have you already sent funds there?