If your computer is displaying advertisements labeled as Ads by ViewMyPDF, then you have most likely have a Chrome adware extension installed called ViewMyPDF Ads. When this extension is installed it will display advertisements labeled from ViewMyPDF and cause ads to be injected into sites as modal lightbox dialogs, overlay images with ads, or perform other advertising behavior.

This article was published first at Remove the ViewMyPDF Ads Chrome Adware Extension

Source: Bleeping Computer