Is this adware on user's machine?

In my production logs on TrackJS, I started seeing following errors. My guess is these are due to adware on user's machines. Anyone ever saw such errors found a reason for them?

400 : GET https://ssp.lkqd.net/ad?pid=234&sid=948480&output=vastvpaid&support=html5&execution=any&placement=&playinit=auto&volume=100&width=400&height=300&dnt=0&gdpr={gdpr}&gdprcs={gdpr_consent}...

400 Bad Request: GET https://s.vertamedia.com/?content_page_url=PRODUCTION-URL-ON-WHICH-USER-WAS-PRESENT&width=400&height=300&cb=155343803173560021&vpaid_type=3&video_duration={ad_duration}&aid=397084