  To account for the microlensing events observed in the Galactic halo,
Gurevich, Zybin, and Sirota have proposed a model of gravitationally bound,
noncompact objects with masses of 0.01-1M_\odot. These objects are formed in
the expanding Universe from adiabatic density perturbations and consist of
weakly interacting particles of dark matter, for example, neutralinos. They
assumed the perturbation spectrum on some small scale to have a distinct peak.
We show that the existence of this peak would inevitably give rise to a large
number of primordial black holes (PBHs) with masses of \sim10^5M_\odot at the
radiation-dominated evolutionary stage of the Universe. Constraints on the
coefficient of nonlinear contraction and on the compactness parameter of
noncompact objects were derived from constraints on the PBH number density. We
show that noncompact objects can serve as gravitational lenses only at a large
PBH formation threshold, \delta_c > 0.5, or if noncompact objects are formed
from entropic density perturbations.
