25NL 2p vs turn raise

First hand at the table. No reads on villain other than he's repping a silverstar.

Leading this flop gets value from draws and Ax.

$0.10/$0.25 No Limit Holdem
PokerStars
8 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG ($39.75)
UTG+1 ($18.77)
MP1 ($19.12)
MP2 ($37.04)
CO ($6.49)
BTN ($21.20)
SB ($12.50)
Hero ($25)

Pre-Flop: ($0.35, 8 players) Hero is BB
UTG calls $0.25, 1 fold, MP1 calls $0.25, MP2 checks, 3 folds, Hero checks

Flop: ($0.85, 4 players)
Hero bets $1, UTG calls $1, 2 folds

Turn: ($2.85, 2 players)
Hero bets $2, UTG raises to $6, $4 to Hero ($21.75)?

Ok so WTF is villain repping here? The only hands we don't have blockers for {33,44,A3,A4,K3,K4} that beat us are AK, KK, AA and lol he limped UTG. Does he really raise his draws or Ax on the turn? I mean fuck me, I'm playing OOP and blind here. Call? Shove? Fold? Ugh,