  We propose a new flavor model that can simlutaneously well-describe the
indirect detection experiment of (decaying) dark matter in the cosmic-ray, with
the binary icosahedral group A'_5. We show not only that the A'_{5} symmetry
can derive quark and lepton masses and mixings consistently, but also that are
expected some predictions for the lepton sector. And if we assume a
gauge-singlet fermionic decaying dark matter, its decay operators are also
constrained by this symmetry so that only dimension six operators of leptonic
decay are allowed up to six dimensional Lagrangians. We find that the
cosmic-ray anomalies reported by PAMELA and Fermi-LAT are well explained by
decaying dark matter controlled by the A'_{5} flavor symmetry, which induces
universal decays.
