The model is called medium crawler, from here:
https://www.myminifactory.com/object/3d-print-medium-flatbed-crawler-274836. It is supposed to be part of the terrain for Warhammer
40k, that is why it is painted as abandoned vehicle. The model was easy to print, parts fit perfectly. The cargo bay was too big to fit in my printer with original supports, I had to make them on my own and it turned out slightly bent. But since it is a wreck, I don't mind that

. I tested use of the special undercoat paint to make the final layer of paint crack and fall off in some places. I may have overdone it a little, but I think it isn't that bad

.