Pito scored two goals for Brazil as well as goals from Rafa Santos and Matheus.
Mojtaba Parsapour and Saeid Ahmadabbasi were on target for Iran.
About 4,500 fans attended the match.
Team Melli had defeated Paraguay 2-1, Colombia 2-0 and Japan 2-0 in the competition.
Paraguay finished in third place, beating Japan 7-3.
Pito also finished as top scorer in the first edition of the competition with four goals.
TM/TT
