A sex fiend raped a 49-year-old woman in a violent attack near Brooklyn’s Greenwood Cemetery over the weekend, cops said Wednesday. 

The victim was walking at 27th Street and Fifth Avenue around 3 a.m. Saturday when the stranger approached her and tried to start up a conversation, police said. 

The sicko then pushed the woman to the ground, threatened her and pulled her into a nearby driveway, where he raped her, authorities said. 

The attacker demanded the victim perform further sex acts on him and punched her in the face when she refused, cops said. 

He then ran off, heading east on 27th Street and then north on Fifth Avenue, police said. 

The victim was treated for her injuries at a local hospital.

The NYPD released surveillance footage early Wednesday of the suspect, who has not been caught. 

He is described as having short, dark hair and a medium build.

He was last seen wearing a black bubble coat, black shirt, blue jeans, and white sneakers.