With both teams having already booked their ticket to next year's tournament proper all that was left to determine was who advanced as Group A winners and who progressed in the runners-up position.
And with Monday's match at the Duhok Stadium ending all square after Iraq midfielder Bashar Bonyan equalising barely 60 seconds after Sasan Jaferi Vali had given Iran a 42nd minute lead it was to be the Iraqis that took top spot on goal difference.
Qatar finished third with six points, four less than Iraq and Iran, after rounding off their Group A campaign with a 4-0 win over Bangladesh in Monday's earlier match.
Defender Mugahid Mohamed opened the scoring in the 39th minute before Akram Afif doubled Qatar's advantage two minutes before the break.
Jassim Al Jalabi made it 3-0 in the 51st minute with Afif netting his second and Qatar's fourth one minute into stoppage-time.