The paper presents the results of calculations of the spectral dependences of the extinction efficiency factors Qext, near-field enhancement QNF, and absorption Qabs for spherical silver nanoparticles (radii of 5, 15.5, and 35 nm) performed using the extended Mie theory. The particles were considered in transparent  (κ = 0) and absorbing (κ = 0.05 and 0.2) matrixes with a high refractive index of nm = 2.0. It was found that even a small absorption in the matrix leads to a significant decrease in the maxima of Qext and, especially, QNF. In this case, the position of Qext peaks remains virtually unchanged, while a slight long-wavelength shift is observed for QNF. It is shown that for particles with the radius of 35 nm at κ0.05, the maxima of QNF and Qabs factors in the quadrupole mode region significantly prevail over the dipole ones, which is not typical for the extinction factor Qext. Significant differences in the spectra and near-field distributions of nanoparticles in real absorbing media (CuPc and NiPc) were revealed. Despite the chemical similarity of the molecules, the dispersion of their refractive indices leads to radically different optical responses of the hybrid system.