Hend entered the final round with a three-shot lead after tricky weather conditions disrupted Saturday's action, but the Australian struggled with his shots from the tee on Sunday and his lead quickly evaporated.
The Englishman was four shots off the pace heading into the final round, where he briefly held a two-stroke lead until a penultimate-hole bogey saw him finish alongside Hend on 14-under.
However, the Australian still leads holds a two-shot lead over the chasing pack which is now led by South Africa's Darren Fichardt, England's Matthew Fitzpatrick and Paraguayan Fabrizio Zanotti who are all at nine-under-par.
He trails leader Scott Hend of Australia by five shots going into the third round tomorrow.
Hend birdied the par-3 13th hole minutes before fading light forced the players off a second time.
Swede Alexander Björk, Thai Thongchai Jaidee and South African Richard Sterne were all at eight under with holes to complete when play resumes at 8.00am on Sunday morning.
Of the other Aussies Sam Brazel (70) was level par, Jason Schrivener (73) at three-over and Nathan Holman (75) at four-over par.
South Africa's Fichardt started the day with three straight bogeys and was three over for his round, which was halted on the 13th hole. Ilonen dropped just the single shot but hit a fantastic eagle on the 15th, and Fitzpatrick went on a sensational run in the middle of his round.
Leading overnight by one shot, Hend was 2 over par for his 13 holes.
Marcus Fraser produced his lowest score in signing for a 66, and that included an 18 hole birdie for a third day running, to end his round at eight-under par and then share of fifth place at eight-under par.
Fitzpatrick was left with a putt of around a foot for the win when Hend could only make bogey as both men completed the 18th hole for the third time in the play-off.