Facing UTG shove w/ AQ.

This line kind of confused me, This was the 5th hand of the session with no stats on the villian. Was this a correct fold or an overbet bluff? i think with AK/AA/KK he would've 3bet me, so all i can really think of is 44/22 or a desperate JJ. Any input?


UTG: $16.94 (169.4 bb)
Hero (MP): $16.63 (166.3 bb)
CO: $9.85 (98.5 bb)
BTN: $16.40 (164 bb)
SB: $6.41 (64.1 bb)
BB: $9.73 (97.3 bb)

Preflop: Hero is MP with Q A
UTG raises to $0.20, Hero raises to $0.75, 4 folds, UTG calls $0.55

Flop: ($1.65) K 2 4 (2 players)
UTG bets $1.10, Hero calls $1.10

Turn: ($3.85) A (2 players)
UTG bets $15.09 and is all-in, Hero folds

Results: $3.85 pot ($0.25 rake)
Final Board: K 2 4 A
UTG mucked and won $3.60 ($1.75 net)
Hero mucked Q A and lost (-$1.85 net)