The left handed Paddison from Wellington, who sank the bunker shot on the last, was delighted to win the qualifying after a final round of five birdies, one eagle and three bogeys.
"We combined very well. It has been a great week and we came here with the goal to qualify and it is a fantastic feeling. Somehow being left handed with a right handed partner worked for us on this course," said Paddison.
Paddison and Hendry will represent New Zealand on the big stage for the first time while runners up Lam and Mamat will be representing Singapore for the fifth time at Mission Hills from November 24-27.
Koreans Kim Hyung-sung and Park Sung-joon claimed the final entry to the Omega Mission Hills World Cup after nearest rivals India (Gaganjeet Bhullar and Anirban Lahiri) imploded with an eight on the par four 18th hole for a final round 80.
Lam and Mardan were delighted to represent their country again in the two-man team showpiece staged from November 24 to 27.
"We came here with the goal of finishing in the top three and we did just that. It didn't matter if we finished in first, second or third, just as long as we qualified for the World Cup. That's why we conceded in the play-off," said Lam.
Final Scores:
271 - New Zealand
275 - Korea
278 - Philippines
280 - India
283 - Myanmar
284 - Sri Lanka
292 - Chinese Taipei
298 - Indonesia
299 - Hong Kong
301 - Ghana
302 - Vietnam
317 - Senegal
DSQ - Brunei
- NZPA