I checked the Bitcointalk link i believe the spammer sent you and it seems a genuine Bitcointalk link which actually lead to a thread where a user is asking for help with Blockchain.com, this post is in the Beginners and Help Board.



But in as much as the link I quoted above looks genuine, I still did not understand why this user sent you this PM because I can also confirm that he didn't participate in the discussion on the thread, If he did, then maybe we would have given him the benefit of doubt and believe he probably wanted to PM another user but mistook you for that user by not taking notice of your username when he assumed he clicked the profile of the user he wanted to PM.

I will join other users to advice you report the PM and maybe block the user if you feel unsafe with your account., On no account should users unnecessarily PM other users on things that makes absolutely no sense, Bitcointalk is not Telagram where spammers have almost no restriction from PMing other random users.