Police say the 38-year-old woman was punched in the back of her head by the man.
When she turned around, he punched her in the face, and then struck her several more times.
It happened on Sunday, March 7 at 6:50 a.m. as the train was arriving at the Myrtle/Wyckoff avenues station.
The attacker then got off the train and fled.
The woman suffered pain and bruising to her face.
The man is described as Black, 30-40 years old, 5'10", and 180-190lbs. He was wearing a black du-rag, a gray sweatshirt, and blue jeans.
Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
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