Babar Azam (45), Ahmed Shehzad (43) and Shoaib Malik (39) had good starts but none of them went on to score big, as Pakistan found it tough going on a slow and low pitch.
For the World XI Sri Lankan paceman Thisara Perera and West Indian spinner Samuel Badree claimed two wickets apiece.
Pakistan lead the three-match series 1-0 after their 20- run win Tuesday in a match which marked the return of international cricket to the South Asian country.