Gal molested in Harlem

A SICKO pinned a teenage girl against a wall in Harlem, pulled down her pants and molested her, cops said Friday.

The 19-year-old was walking into a building near 145th St. and St. Nicholas Ave. around 3:30 a.m. when the unidentified pervert attacked her, according to police.

The man yanked down her pants, performed a sex act on her and took off, cops said.

Cops released surveillance video (above) of the backpack-wearing creep pacing on the street with headphones on and a handful of shopping bags.