Trailing 3-2 in the third period, Bennett got the equalizer 9:49 into the frame and Malkin quickly followed with another marker off a Hurricanes turnover, boosting the Pens to the division title.
Marc-Andre Fleury turned aside 25 shots in the victory.
Riley Nash, Joe Corvo and Bobby Sanguinetti scored for Carolina, which fell to a club-record eighth consecutive home loss.
Justin Peters made 28 saves for the Hurricanes.
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