Noh, who won the China Classic as a rookie on the Asian Tour last year, collected an eagle and nine birdies against just one bogey. The sizzling performance gave him a one-shot lead on playing partner Alexander Noren of Sweden.
Noren, after his 63 was upstaged by the teenager, called Noh's performance 'unbelievable.' For his part, Noh was more reserved.
'I'm happy,' he said, 'but you don't win a tournament on the first day.'
France's Jean-Francois Lucquin and Liang Wen-chong of China are tied for third place at 7-under 65, while England's Nick Dougherty leads a three-way tie at 6-under 66.
Noh started his round with a 45-foot birdie putt on his first hole, the par-4 10th at Saujana Golf Club, and followed it with a birdie at the 11th.
The start caught Noren by surprise.
'Our first hole was the 10th and he hit his tee shot way right and I thought to myself he might be a little bit nervous,' said Noren. 'Next thing I know he knocks it on the green and makes the putt for birdie. Obviously he wasn't too nervous.'
And he didn't slow down.
Noh collected three more birdies before making the turn, then three birdies in the first four holes on the front nine. His only bogey came at the par-five fifth, but he made that stroke up ' and then some ' with his eagle at the par-five seventh.
His last birdie came at the eighth, giving him a one-shot lead over Noren.
'He was just unbelievable,' Noren said. 'I seemed to be one ahead of him all day, but then he birdied four, eagled seven and birdied eight to get one ahead of me.'
Noren, although he didn't walk off with the lead, was happy to have erased the memories of shooting an 81 at Saujana two years ago.
'I played here two years ago and found it very tough, so either I'm getting better or the course is getting easier,' said the 26-year-old Noren. 'I had bad memories of this place but I love it now.'