A stranger shoved an unsuspecting 28-year-old man onto subway tracks in a lower Manhattan train station Wednesday morning, police said — in another random attack in the city’s underground. 

The victim was on the southbound Nos. 4/5 platform at the Brooklyn Bridge-City Hall station around 10:15 a.m. when the brute attacked him without uttering a word, according to authorities. 

The straphanger was taken by EMTs to NYC Health+Hospitals/Bellevue in stable condition, cops said. 

The attacker is believed to be in his 20s and wearing all black, according to police.

He fled the station and remained on the lam Wednesday afternoon.

The unprovoked assault came two weeks after a 30-year-old woman was pushed into a departing E train, leaving her fighting for her life.