Umar pleaded guilty to the offence and accepted the proposed sanction and thus there was no need for a formal hearing.
The incident took place in the 17th over of Pakistan's innings when Umar, who was the non-striker, ignored both on-field umpires' request and went ahead to change his batting gloves in the semifinal match last night.
Jeff Crowe of the Emirates Elite Panel of ICC Match Referees, while explaining his decision, said, "Respect for the umpires is integral and is something which we always emphasise and encourage.
"In this incident, Umar showed blatant disregard to both the umpires' requests, which was offensive and unacceptable from an international cricketer and contrary to our unique spirit, hence a level two charge was laid. Umar, when pleading guilty, apologised and regretted his action," an ICC statement said.
The charge was laid by on-field umpires Simon Taufel and Rod Tucker, third umpire Ian Gould as well as fourth official Steve Davis, all from the Emirates Elite Panel of ICC Umpires.