If you install that "extension," you have just installed a browser hijacker, an adware injector, or a cryptocurrency miner. There is no generator behind the curtain—only a social engineering trap.
Elias opened the folder. The video file was there, but the icon was pulsing. yandex premium link generator
The question remains: Does a premium Yandex account actually matter for file downloaders? If you install that "extension," you have just