NYPD officials have released new surveillance video and a picture of the suspect.
He is seen wearing dark pants, black shoes and a gray T-shirt with a long vertical stain on it.
Investigators say the attack happened early in the morning on Oct. 6 in midtown Manhattan after the victim asked for directions to Queens because she got lost on the subway.
They say the 31-year-old female victim was dragged by her arm to a location near West 51st Street, between Eighth and Ninth avenues, where she was raped.
Police say the victim suffered bruising and was taken to a nearby hospital.
Anyone with information about the suspect is asked to call NYPD Crime Stoppers at 1-800-577-TIPS.