Cluster bombs are already around (e.g. HAFR-1/HAFR-2). I think this new thing could either be a tandem penetrating warhead (e.g. for Ra'ad/Babur) or something aiming to emulate the CBU-105.
It won't be a 100%, but the core of it might be doable.
1. The actual delivery platform for such sub-munitions is already available in the Ra'ad and the Chinese GB6, the latter basically being analogous to the JSOW platform. The GB6 can handle sub-munitions, but likely unguided ones such as the HAFR-1 and HAFR-2 or just free-fall cluster bomblets.
2. The main issue is achieving the guided top-attack element. I don't think Pakistan can emulate the BLU-108's skeet model, but they can try making bigger and less complex top-attack munitions that have drag parachutes and IIR seekers.
South Korea and Germany doing it with the KSTAM and SMArt-155. Though tank and artillery shells, but each shell has one or two cup-sized sub-munitions with parachutes for drag and IIR and/or mmW seekers for target acquisition.
3. Pakistan could look at re-using the HAFR-1 and HAFR-2 as the core munition, but attaching a drag mechanism (it's already there, no?) with an IIR seeker, the latter seeking targets before triggering ignition. This is less sophisticated than the CBU-105, KSTAM and SMArt-155, but it does give an analogous capability to them, albeit with fewer rounds and less area coverage.
@JamD
