I wouldn't jump to conclusions if I were you -- from the actual track record[1], it looks like the middle of the country, rather than near the border. It's not even over one of the "troubled" eastern regions, nowhere near "rebels" or Russian troops.
Mh, ok, apologies - i trusted the pic rather than the report. The pic shows a position well outside the Donetsk area.
Still, it's weird that the last tracked position shown on that pic is to the West of Donetsk and very much outside the troubled area, but the reported crash site is just to the East of Donetsk, deep into "rebel" territory. Could that be an artifact of the tracking system?