Some kind of malware - Redirect from template

Hi guys, pls help me with my situation because it's posible to have this truble more people that I think.
I installed this template using quick archive and now after a few months (3 months) I found something.

When I use the phone to access my website and I push the back button to go to the previous page, I have an redirect or new tab with an porn website. This problem I have it with 2 or more websites which are on different servers and country.
I disabled the main template (gavick template) and I test it with one of the joomla's template and everything works fine. This redirect appear when I push back buton from my phone or sometime when I wait like 15 seconds and I want to click on other page, then I am redirect to other website with adult content.
Because it work fine without gavick template I am thinking something is hide in the template files but I have no ideea how that is posible. Someone hack my both servers ? Or my computer is with malware/virus ? Because I use a lot of software to protect my computer & data like Bitdefender or so ...

Pls Help me with any ideeas where I should looking for (I'm think maybe is something in .js files ?) One of the website with this problems is here https://goo.gl/VFH37M

Hi

It is related with Cookie Consent plugin. Please simply update template to the latest version, where we have switched to a different one or disable using it and install some 3rd party plugin instead. No files of this hacked plugin are attached to template, just a link to the place where this plugin is used from.