Strange URLs in Google Search Console

Hi All :wave:

I’ve picked up tens of thousands of strange URLs in Google Search Console.
Examples
http://quotesaday.com/2109549754_lienableou.ee
http://www.quotesaday.com/incoherently-creaky-2187215151.marketing
https://www.quotesaday.com/jargonaphasia-d03679qreformer-2171750953/

My website (quotesaday.com) is hosted in Google Cloud Platform and I use the free version of Cloudflare. I’m assuming my server might be hacked?

I have other Ghost installs on GCP and don’t have this issue.

If I delete the instance and reinstall the site on a new server will this solve the issue?

Any help would be appreciated.

Thanks

Matt