Sibair 1812
Couple of major differences with Sibair 1812:
Ukranian forces target a drone with a S-300 missile. It was supposed to detonate once the target drone was destroyed but did not, kept going out to sea and ended up acquiring Sibair 1812. Big difference to deliberately targeting an aircraft with no attempt to identify it or contact it via radio before shooting it down. Ukraine didn't invent stories about phantom fighter aircraft either and took responsibility for the incident.
Also, it was the USA who detected the missile launch through their DSP satellites and it was the USA who informed the Russians that the aircraft was downed by an Ukranian missile. Russia were happy to accept their verdict then and should do so now.
I see little parallels between MH17 & SibAir1812.