I figure UTG can be raising with a somewhat medium range since the big blind is so short but i have no specifc reads on him or how he has played this session. By shoving over him I put him in the ICM cage

PokerStars - $2.30+$2.30+$0.40|800/1600 Ante 150 NL - Holdem - 6 players
Hand converted by PokerTracker 4

BB: 7,951 (VPIP: 27.27, PFR: 6.84, 3Bet Preflop: 3.70, Hands: 133)
UTG: 30,830 (VPIP: 20.53, PFR: 15.20, 3Bet Preflop: 8.20, Hands: 195)
MP: 14,886 (VPIP: 15.00, PFR: 10.53, 3Bet Preflop: 0.00, Hands: 20)
CO: 21,807 (VPIP: 23.26, PFR: 5.56, 3Bet Preflop: 5.56, Hands: 43)
BTN: 22,295 (VPIP: 21.24, PFR: 17.28, 3Bet Preflop: 5.40, Hands: 2,069)
Hero (SB): 37,231

6 players post ante of 150, Hero posts SB 800, BB posts BB 1,600

Pre Flop: (pot: 3,300) Hero has 3 3

UTG raises to 3,360, fold, fold, fold, [color=red]Hero ???

According to ICM, calling is better than shoving: +0.12 (call) vs +0.02 (shove)
3betting (like 8k) is -EV
And shoving is still good 27.5%, 22+ A2s+ A9o+ A5o-A4o K2s+ KTo+ Q8s+ Q6s-Q4s QTo+ J8s+ JTo T9s
GL!