The first half ended with Pakistan leading 1-0 as Salman Hussain scored a goal in the 16th minute for green shirts.
The Koreans came strong in the second half as Hyun Hye levelled the score.
But Pakistan were again leading 2-1 after Haseem Khan deflected in a cross in the 47th minute.
Pakistan’s own goal in the 53rd minute helped the opponents levelling the score once again.
Pakistan are likely play against India on Sunday for the fifth place.