$22 NLHE MTT: river?

***** Hand History for Game 18011039593 *****
NL Texas Hold'em $22 USD Buy-in Trny:191869966 Level:7 Blinds-Antes(600/1.2K -140) - Friday, November 30, 20:14:15 MSK 2018
Table MILLIONS Online ADDED Feeder. 20 x $109 Tickets Added (191869966) Table #24 (real money)
Seat 7 is the button
Total number of players : 8/8
Seat 2: Howisyrsexlife ( 90,474 )
Seat 4: Jijiboo01 ( 93,455 )
Seat 8: Snelly_23 ( 101,719 )
Seat 1: Streln ( 95,535 )
Seat 6: kanava0118 ( 92,962 )
Seat 7: omnom8 ( 110,102 )
Seat 5: propagandhi1812 ( 100,000 )
Seat 3: stoney6121 ( 107,665 )

** Dealing down cards **
Dealt to omnom8 [ Kh Ah ]
Howisyrsexlife folds
stoney6121 folds
Jijiboo01 folds
propagandhi1812 raises [2,400]
kanava0118 folds
omnom8 raises [9,000]
Snelly_23 folds
Streln folds
propagandhi1812 calls [6,600]

** Dealing Flop ** [ 8s, 7d, 6c ]
propagandhi1812 checks
omnom8 bets [11,506]
propagandhi1812 calls [11,506]

** Dealing Turn ** [ 3h ]
propagandhi1812 checks
omnom8 checks

** Dealing River ** [ Jd ]
propagandhi1812 bets [18,000]

If you bet that turn and the other player calls, the river is a check behind or fold to any bet situation. Since you didn't bet the turn, it's harder to predict if the other player knows you have nothing and is bluffing you or they actually have something. With no knowledge about this player's history, I would fold, but maybe you have a better read that could justify calling.