Bravo! You solved the riddle.
The information I have read is that Baijah Automotive Gmbh was that it was a German company, founded in Bad Neuheim by one Marcus Nöske, and that they used to import UAZ models (the classic 469 and the Patriot), swapping the engines for EU-built units to comply with emissions regulations, and renamed them Baijah Taigah and Tulos respectively. Then in 2007 they presented this car, called Stalker, as a prototype based on a Lada Niva but announcing that when it went into production they would use the powertrain of a Fiat Panda 4x4. I wasn't able to find anything else about the Stalker, and since I had read that Baijah went under in 2008, I assumed that no more units were actually produced. You seem to have found another one with Russian plates, and I have no idea where and when that has been produced or if it's still a Lada Niva underneath.
What I did notice as I tried to research more about this car was, as you pointed out, that the bodywork is almost the same as that of the Travec Tecdrah, which had been a puzzle before (
https://www.autopuzzles.com/forum/2012-41/solved-djetset-580-travec-tecdrah/). The Tecdrah is based on the Dacia Duster, and was developed by another German company called Travec Automotive GmbH. I haven't been able to find any source that links Baijah and Travec explicitly, but since the similarity of the bodywork is obvious, I assumed that the explanation must be that after the Stalker project fell through, Baijah sold the design to Travec, which then re-engineered it to adapt it to the Duster platform. Again, I don't know where that leaves that Russian Stalker that you found.
