They released a composite sketch of the man on Friday.
Police say the two boys were walking in the 200 block of East Hinckley Avenue just before 4:00 p.m. on Thursday when a man, driving a teal Chevy, approached them.
The driver yelled at them to get into the car but the boys ran.
The boys were walking home from Lakeview Elementary in a heavily populated area when the incident happened.
"We don't know his intention, but there's a lot of crazy people out there," said Chief Tom Byrne of the Ridley Park Police Department. "We just don't want to take a chance. We want to find out who this guy was."
Anyone with information should call Ridley Police.
Police have stepped up patrols, making sure the area is safe in the days leading up to Halloween.