For the winners, Hyan Hye Sung struck a penalty corner goal in the 32nd minute and seasoned Nam Hyun Woo slotted home from another penalty corner in the 57th minute.
For New Zealand, Stephen Jenness scored a field goal in the 40th minute of the third-place match.
The Korean attack came in waves mainly from the flanks with the defence assisting the forwards with snap crosses interspersing well with the long clearances.
The variation and guile with which the Koreans employed in their penalty corners had the unsettling effect on the New Zealand defence.
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New Zealand looked a pale shadow of a team which lost out to Australia in a crunch game, allowing Korea all the avenues to orchestrate their attacks.
The Koreans could have the luxury of having an extra man upfront with the defence adroitly manned by Nam Hyun Woo, Hyan Hye Sung and Hong Eun Seong.
New Zealand put the contest on level terms from their third penalty corner. From a skirmish inside the D, New Zealand's Stephen Jenness, who took the push, was on hand to deflect it in, in the 40th minute.