It looks like a virus. iOS

Question

iOS

I have an iphone. iOS6.1.1. When you enter some sites, it redirects you to outright fraudulent pages, a la update your flash player (naturally, the user agreement states that this is a file-sharing service, the cost of using it is ~ 400 rubles. I’ll throw off examples in addition.
Questions:
How did this rubbish get into the “system without viruses "(no Jail)?
How to protect yourself from this How to clean this rubbish, as I understand it in hosts. Do you have
to climb through ubuntu? (I cleaned cookies, cache, application data). Will I get an empty device after that. Here
is
the store www.gitaradarom.ru/
And here are the scammers updatebot.pp.ua
And there are enough such sites.

Answer 1

It's not your virus, but on the sites - www.siteadvisor.com/sites/gitaradarom.ru
Alternatively, you can write to the site owners. Or just don't visit them.

Answer 2

I came across such sites when visiting from mobile devices. For example, somehow in the trailers on the movie search there was an advertisement "credits in one night". I went to the specified site. I saw several spelling errors. I wanted to write to them, no contacts. I decided to write to those who made the site for them (it was indicated) and when I went to the site from the iPad, such rubbish came out (malicious iframe). As the experts explained to me, the useragent is being identified. Like you are from a mobile device and you can get hooked on a content subscription. I immediately went to the same site from the iPad's Mercury browser with Mozilla's useragent turned on - no rubbish came out