Wooden handguard and gas chamber betray the AK-74 (not even 74M) with the utmost certainty. It was modded heavily though, the stock has been swapped, magazine is different, pretty much everything that can be relatively easily modded is.
The “graffiti” is funny, actually. They wrote АТБ which is a groceries chain in Ukraine, the equivalent of Russian Пятёрочка. That store is effectively renamed.