50NL:MP vs bad player

[Malifous]

Hero checks behind, what do you think you are beating after hes flop call, both 7 and 9 are clearly in hes range and only reasonable hand you are ahead is some kind of straightdraw and overcards, but straightdraw is pretty unlikely too since you have both of the 8ths. Revaluate river, i would most likely check behind unless 8 hits since no worse hand is calling.