Adware/malware/virus on iPhone ?

Hello,

I recently encountered a strange issue on my iPhone 7 . Whenever i open a specific site with Safari, i always get also a new tab opened with an ad .

I always close it, and clear history and website data , but i was wondering ,could it be an adware/malware/virus on my iPhone ?

I don't have any issue browsing on other pages , no redirects no pop-ups, nothing . Just on that specific site , i always get the same ad opened or at least a similar one.

I searched on the internet the name of the site that opens as an ad, and it says it's a virus , that some adware is installed on your computer . I found that this affects all browsers and all OS and for all of those there are ways to remove it . But there is nothing about iPhone , and not a way to know that it is present or how to remove it (the behavior for other users that say they have encountered this is that this site opens on any site they are browsing , so this is a little different behavior than mine).

I even reinstall the OS via iTunes , and still on that site same behavior . I tried on both , wireless and mobile data and same behavior . I also tried with 2 devices with different OS , there i also get an ad but it's not the same one . From settings i have the following options for Safari : Do Not track , Fraudulent Website Warning , Block Pop-ups.

To mention the issue is not present anymore if i turn off Javascript.

So to sum up everything - is it possible to have a adware/malware/virus , or it is another issue ?