In the Yandex search results, the site has become gray, what should I do?

Question

Search Engine Optimization

The site of our company has ceased to open through the Yandex search results (but it is in the 1st place in the search results).
For the first time I see this, please explain what it is and how to fix it?
Request "Eurodom Nizhny Novgorod", site evrodomnn.ru
https://i.gyazo.com/6a227a220ffdbff948308f9dae2e83... - screen

Answer 1

Yandex detected a virus on the site https://habrastorage.org/files/6df/581/720/6df5817...
You need to find it and remove it.
By adding a site to Yandex.Webmaster, you can get additional information about infected pages.

Answer 2

It seems that the matter is in the service that gave the site calltracking - lptracker, which also gives the opportunity to catch the Vkontakte ID of everyone who was on the site.
It's strange that this function worked only on 1 site ... but in the end everyone was blacklisted, even where the service does nothing but calltracking

Answer 3

This is not from your browser
as others say