Have you seen this. This infected website. If the infection is really cleaned up, notify Google via the Search Console(by the way, were you there? not arguing whether the console?),what you need to reindex...
The experience to several weeks these scratches can disappear.
But this is only if cleaned!
ada.Johnsto answered on March 23rd 20 at 19:20
It is a virus. Look for files with the extension .(xml site map for search engines), check your site at least Dolittle clean malicious code and update it and the plugins)