In the first leg on July 31, Hanoi FC had the away goal advantage with Nguyen Van Quyet scoring from the penalty spot.
The winner of the AFC Cup ASEAN zonal final will get $100,000 and a slot in the AFC Cup interzone semi-finals against Turkmenistan's Altyn Asyr, the winner from the East Asia zone.
Hanoi is currently on top of V. League while Binh Duong ranks 10th.
Photos by Lam Thoa