PDF files

In order to keep my administration organized, I now have over 800 PDF files. And now Avast has discovered that that is terrible.

Can you explain that to me in simple terms and preferably adapt your software, because I will not be the only one who uses PDF as software of the future.

Can you be more detailed in what the problem is.

Is this an Avast detection ?
If so a screenshot of the alert screen could help.

I have just done a manual (explorer right click) scan of my PDF sub-folder and no issues/alerts.

@rvdv, Was it reported by Smart Scan?