The statement, the authenticity of which could not be verified, said the plane was hit "head on" with a ground-to-air SAM-7 missile.
'Head on'? B.S. - ghouls capitalizing on tragedy.
The SA-7s are ancient and designed as revenge weapons for hits on the exhaust. The SA-14 would have a better chance, since it was designed with a better nitrogen-cooled lead sulfide seeker. But the SA-14 is rarer and those SA-7s in terrorists' hands are getting older and less-reliable by the minute.
See:
http://www.fas.org/man/dod-101/sys/missile/row/sa-7.htm