
The world No 7 pair took 52 minutes to defeat the lower-ranked South Korean pair of Lee Yeon Woo-Lee Yu Lim in straight games by a 21-19, 21-16 scoreline.
Yeon Woo-Yu Lim, who teamed up only last November and were playing in their fourth tournament, gave the Malaysian top pair a tough fight, even coming back from a 4-11 deficit in the first game to lead 19-18 before losing.
Pearly-Thinaah will face South Korea’s world No 29 pair Kim Hye Jeong-Kong Hee Yong in tomorrow’s final.
They will seek to avenge their loss to Hye Jeong-Hee Yong in the India Open semi-final last week.
The last time a Malaysian women’s doubles pair captured the title at the Indonesia Masters was in 2011 when Vivian Hoo-Woon Khe Wai won.