1/2 pl interesting flop decision

[krammatrix]

1/2 pl on fulltilt. new to table no reads. no hh sorry. I have 280 to start this hand, MP1 has 250, SB has about 100. I'm in BB.

Dealt to HERO: 9c5s4c5c

a few folds, MP1 limps, sb completes, I check.

FLOP: 954r
SB leads for pot, I raise pot, MP1 raises pot, MP1 thinks and pushes, I?

Its 100 something to call, i'm obv not gonna smooth call it, its push or fold. Is this a standard fold? having the 9 in my hand really leaned me towards call.