Looks to me like it has a Contax back, given the raised bails on the bottom of the camera. IIRC, the bails on the Kiev are flat. The rest of it has Kiev features, such as no feathers on the arrow on the rewind knob, and no raised rim on the frame counter dail next to the winding knob. The bezel on the front of the lens looks unlike any CZJ Contax lens I have ever seen, either.
Funny thing is, CZJ is supposed to have made 4 or 5 Contax cameras in this hideous color scheme in 1947 or 1948, but never produced them for sale.