WIX PDF viewer is blocked by Avast

Hi,
My club has a basic WIX website with a few PDFs on it that we use the PDF viewer to display. Not sure when it started, but people have noticed today that Avast is blocking any of the PDFs from being viewed with a URL:Mal infection tag, but I don’t get any errors from Sophos on my Mac. I’ve Googled but don’t see any others reporting the same issue so not sure if it’s specific to our WIX site or whether it’s a new issue. Has anyone else heard about this?

You can report a suspected FP (File/Website) here: https://www.avast.com/false-positive-file-form.php