Make this call?

[Cort]

PokerStars No-Limit Hold'em Tourney, Big Blind is t800 (8 handed) converter

UTG+1 (t11385)
MP1 (t6000)
MP2 (t10743)
CO (t22972)
Button (t15038)
SB (t7400)
Hero (t14275)
UTG (t4192)

Preflop: Hero is BB with Kd, Ac.
UTG raises to t4142, 3 folds, CO raises to t22922, 2 folds, Hero calls t13425 (All-In).

Flop: (t40789) Jc, 3s, 7s (3 players, 1 all-in)

Turn: (t40789) Td (3 players, 1 all-in)

River: (t40789) 8d (3 players, 1 all-in)

Final Pot: t40789
Main Pot: t12676 (t12676), between CO, Hero and UTG. > Pot won by CO (t12676).
Pot 2: t28113 (t28113), between CO and UTG. > Pot won by CO (t28113).

Results below:
Hero has Kd Ac (high card, ace).
UTG has 5c 5s (one pair, fives).
CO has 8s 8h (three of a kind, eights).
Outcome: CO wins t40789.

My thinking was UTG either had small pair or any Ace. COs all in is clearly an isolation raise, where I could easily be dominating him. Call or wait for better spot? I was a little above average in chips at the time, and we were quickly approaching the bubble. Another factor in my thinking was that taking this pot meant a top 5 stack with about 87 to go.

[Exitonly]

think thats a fold, some of your outs are dead, and you need outs.