This is the Russian UAB-20 OFL (УAБ-20 OФЛ), a High-Explosive Fragmentation (HE-Frag), lightweight, free-fall, Laser-Beam-Guided (LBG), aircraft Guided Bomb Unit (GBU), used on UCAVs designed to engage manpower and lightly armoured targets similar to the KAB-20.
KAB means Korrektiruemaya Aviatsionnaya Bomba or literally Corrected Aerial Bomb and the number 20 is the weight of the bomb.
It is assumed that the family includes variants of models with different guidance systems, such as Laser and satellite positioning, with different warhead options such as demolition, Thermobaric (FAE) and penetration and this may be a version of the KAB-20 bombs.