Chaff?
By "chaff",do you mean the tinfoil flakes they used to drop from planes to confuse enemy radar? Or do you use the term figuratively to imply the paper itself is deliberately designed and released to mislead enemy spies?
Or perhaps you think these Ukrainian researchers are somehow being misled or confused by some secret Russian tech?
Or perhaps this UFO angle is just fake news designed to misdirect scrutiny away from some other area?. The possibilities are endless.