How bad is this?

[citanul]

39 remain, 20 pay, blinds 150/300, party tournament, avg stack = 5000.

hero has 10k in the bb, and has 76.

10k is 3rd-5th stack in the tournament, though hero's table has a 5 stacks between 7500 and 10,000, excluding his own.

CO opens to 600, and has 8.5k total. CO's been loose, particularly with his preflop raises, which have been between 600 and 1200 without much rhyme or reason known at this point.

folded to hero, who calls. pot 1350.

flop: 9c 8c 4h

hero checks, villain bets 1300, hero pushes.

how good or bad is this, with either hero having 76o, or 76c?
i have a feeling this is fairly standard with 76c?

citanul