While this attack has typically been used for phishing and malvertising, it would be very simple for it to extend to deploying skimmer malware to harvest payment data and PII.
A quick check of a website using ThreatView will validate whether the site has been caught up in this global infection or not.
Here are the details of the global infection, with IOC data if you wish to check your site without using our free ThreatView platform: Parrot TDS Loader