Salah, who has not been at his best since returning from injury last month, was brought on in the 79th minute, just after the Hammers' second goal levelled the game
The hosts beat Nepal 6-3 after netting four times in a commanding first-half display in the quarter-finals of the fourth edition of the tournament at Mirpur Indoor Stadium on Tuesday.
Hridoy hit the target thrice, Shohag twice and Arafat scored the other to secure Bangladesh's best showing in the competition, eclipsing the previous best of seventh position.
Bangladesh stormed into the quarterfinals by demolishing Chinese Taipei 12-1.