BestSearchPDF

BestSearchPDF, despite what its name may suggest, is a browser hijacker application that will take over the user's Web browser. Browser hijackers are often used as vehicles in the promotion of fake or dubious search engines. After all, users are extremely unlikely to use the services of such unproven and questionable engines on their own. 

Furthermore, browser hijackers also are classified as PUPs (Potentially Unwanted Programs), as a result of the underhanded tactics used in their distribution. Methods such as bundling or being injected into fake software installers/updaters are designed specifically to hide the installation of the intruder application from the user. 

Once established on the system, BestSearchPDF will immediately target specific browser settings and reassign them to open the feed.bestsearchpdf.com address. Browser hijackers most often modify the homepage, new tab page and the default search engine. By doing so they ensure that no matter if the browser is just opened, a new tab is started, or a search is initiated via the browser's URL field, it would always result in a redirect to the sponsored address.

Fake engines are classified as such, due to their inability to produce any search results on their own. When a search query is started, they will either take it to a legitimate engine or redirect to another dubious one. Results show by questionable engines quite often prove to be unusable and riddled with sponsored ad links.  

PUPs should be removed as soon as possible or users risk having their browsing activities monitored and tracked. After all, data-harvesting is a functionality commonly associated with PUPs. To make sure that your device is clean, perform regular scans with a professional security solution.