The suspect strikes him repeatedly with what appears to be a knife before running off.
The attack happened just before 3 p.m. February 24 at the corner of 179 Street and University Avenue in University Heights.
EMS took the victim to Saint Barnabas Hospital, where he has since been treated and released.
Police say no property was taken in the incident.
The individual is described as a male, 20's, dark complexion, approximately 5'8" tall, weighing 160 lbs., small build and black hair.
He was last seen wearing a black hooded jacket, a grey hooded sweat jacket, grey pants, a black surgical mask and sneakers.