Unwanted google ads appear on wordpress site. How to get rid?

Question

Malware

Hello.
Recently, banners with ads have started popping up on the site - both on desktop and mobile, with the adblock turned off.
I noticed that right before the block, which is an advertisement, a script appears in the code:

fr_30_0.onresize = function() {
    frm = top.document.getElementById('div-mb-native-0-97').getElementsByTagName('iframe');
    frmh = frm[1].height;
    frm[1].style.removeProperty('height');
    frm[1].style.setProperty('height', frmh + 'px', 'important');
    frmh = frm[1].width;
    frm[1].style.removeProperty('width');
    frm[1].style.setProperty('width', frmh + 'px', 'important');
};
googletag.cmd.push(function() {
    googletag.display('div-mb-native-0-97');
});
googletag.cmd.push(function() {
    googletag.pubads().addEventListener('slotRenderEnded', function(event) {
        var x = document.getElementById(event.slot.getSlotElementId());
        if (event.isEmpty && x) {
            x.style.display = 'none';
        }
        if (!event.isEmpty && x) {
            var advText = x.parentElement.previousSibling;
            advText.parentNode.removeChild(advText);
        }
    });
});

The block itself consists of the following:

<div id="div-mb-native-0-97" style="" data-google-query-id="CImv57Ss6esCFZKBmgodc3YHQg">
  <div id="google_ads_iframe_/145047668/RT/Native_0__container__" style="border: 0pt none;">
    <iframe id="google_ads_iframe_/145047668/RT/Native_0" title="3rd party ad content" name="google_ads_iframe_/145047668/RT/Native_0" width="300" height="250" scrolling="no" marginwidth="0" marginheight="0" frameborder="0" srcdoc="" data-google-container-id="1" style="border: 0px; vertical-align: bottom;" data-load-complete="true"></iframe>
  </div>
</div>

How can you even deal with this?

Answer 1

How can you even deal with this?

Do not use warez templates, at least. Well, at worst, check them