Citation needed.

I think you are conflating two separate events. Iran shot volleys of missiles at two different bases in Iraq. Separately, but on the same day, aUkraine-bound Boeing 737 800 crashed hear Tehran[1]. Some articles are reporting that it had technical problems. But it may take a while to verify because Iran is withholding the black box from Boeing.

[1] https://www.nytimes.com/2020/01/07/world/middleeast/iran-pla...

Watch the video and then look at the results - that thing was either shot down or blown up. That is not a Boeing malfunction

They shot down a plane mostly full of Iranians and Canadians?

Generally, passenger planes are shot down due to incompetence from trigger-happy idiots, not because anyone actually wanted to attack a passenger plane. So this is entirely plausible.

There were holes in the airplane consistent with air defense guns. The photos are pretty clear.