Police say a 31-year-old man entered a stairway inside the lobby and was confronted by the two teens.
The suspects are accused of grabbing the victim and cutting him over the eye, while trying to remove his property.
The pair then took off running.
The first suspect is described as a black male about 16-18 years old with a dark complexion. He was last seen wearing a multi colored Mercer Club shirt with the number 2 on the back.
The second suspect is also described as a black male about 16-18 years old with a light complexion. He was last seen wearing a black hooded sweatshirt with gold lettering in the front and a gray fitted hat.
Anyone with information is asked to call Crime Stoppers at 1-800-577-TIPS (8477). You can also submit your tips by logging onto the Crime Stoppers website at WWW.NYPDCRIMESTOPPERS.COM or by texting your tips to 274637 (CRIMES) then entering TIP577.
All calls are strictly confidential.