PREFLOP: I dont think it matters in the long run whether you call or raise in this spot.

FLOP: I like your check. You are against 4 players, a flop bet will never win this pot, and you could get checkraised and have to pay 2sbs to see the turn when you couldve done that for free. If however all you opponents are passive and very unlikely to checkraise you, betting the flop may be ok with the intention of taking a free card on the next round. But with no read and no hand against 4 opponents, I think the standard line should be to take your free card right away on the flop.

Turn: Standard

River: Good fold, given the action and the description of the players, there is no way your hand is good.