I had someone message me today that had the same username as Crypto-Universe, official distributor for Canaan but didn't have the same activity level (which tipped me off). proof: https://imgur.com/a/B4sF4
Brand new account + asking for payment straightaway in PM = obvious scam.
Good thing that you picked it up early and notified other people so that people can be alerted about it and nobody else will get ripped off. I'm sure that you're not the only person that has been sent that PM, probably a ton of people received that spam PM.
Always check the account PMing you to see if it is actually the right account. Never send first in a trade unless you know that the guy is trustworthy and is going to deliver whatever he promised to either.