  In this work we perform a comprehensive statistical analysis of the AMS-02
electron, positron fluxes and the antiproton-to-proton ratio in the context of
a simplified dark matter model. We include known, standard astrophysical
sources and a dark matter component in the cosmic ray injection spectra. To
predict the AMS-02 observables we use propagation parameters extracted from
observed fluxes of heavier nuclei and the low energy part of the AMS-02 data.
We assume that the dark matter particle is a Majorana fermion coupling to third
generation fermions via a spin-0 mediator, and annihilating to multiple
channels at once. The simultaneous presence of various annihilation channels
provides the dark matter model with additional flexibility, and this enables us
to simultaneously fit all cosmic ray spectra using a simple particle physics
model and coherent astrophysical assumptions. Our results indicate that AMS-02
observations are not only consistent with the dark matter hypothesis within the
uncertainties, but adding a dark matter contribution improves the fit to the
data. Assuming, however, that dark matter is solely responsible for this
improvement of the fit, it is difficult to evade the latest CMB limits in this
model.
