Trojan.Agent refers to a generic Trojan malware detection. It is used for detections that are either associated with no specific malware families or not enough information is available to pinpoint the malware family.
This is the generic detection for a family of adware Trojans that are also known as SearchMaster. They inject advertisements in search results and other websites. The advertisements are usually of the kind that serious websites will refuse: tech support scams, surveys, porn, and other dubious redirects.
This adware Trojan is usually installed by bundlers.
Malwarebytes can remove all the files that come with Trojan.Wdfload without further user interaction.