BB hand, late in PS tourney

[CheckRaise]

PokerStars No-Limit Hold'em Tourney, Big Blind is t8000 (5 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">SB (t138738)</font>
<font color="#C00000">Hero (t96272)</font>
UTG (t215439)
MP (t141200)
Button (t285953)

Preflop: Hero is BB with A[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, Button calls t8000, SB completes, Hero checks.

Flop: (t21600) 4[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB bets t32000</font>, Hero ???

This is a Pokerstars $1 tournament, I am 9th in chips with 11 people left. 11th place pays $9.90, 10 pays $15. I thought about pushing pre-flop but decide to check and push on a flop that hit me. My question is, is this a push or do I fold and wait for someone else to bust? SB hasn't done anything out of line yet, been at his table for about 20 hands. Any advice/criticism welcome as I am very new to MTT and not sure what to do in bubble type situations like this one.