You are protected by the StubHub FanProtect Guarantee, so if there is a case in which the ticket is not legitimate call right away and they will provide you with a replacement.
Odds are, the ticket that you purchased is not fraudulent. You can ask Stubhub to check the integrity of the seller if that eases your mind a bit as well.
Hello, and thanks for reaching out! Every purchase made on StubHub is covered by our FanProtect Guarantee. If you do not receive the correct tickets by the time the seller promised, or in the rare occurrence there is an issue with the tickets at the venue, reach out to us right away! We will do our very best to replace the order with comparable tickets, or you’re entitled to a refund.