What other hands have you shown down UTG? If they see you playing low PPs or SCs or worse, you will run into hands like this. There are lots of hands to be scared of when you get played back at after raising UTG. They must know you have a high PP and/or an Ace unless your range is wider (mine is). I would think they have a set or AK or AT. The range of hands they could have is wide here from the button. Even the river push could be a missed flush draw. Since nobody is playing back at you until now, maybe check/fold the turn. When passives wake up it's usually trouble and it looks like a value bet to keep you in on the turn. The result is surprising. Tough hand that I've played the same way many times and lost most of them.