As mentioned, KeyWordsSearch hijacks browsers by making changes to their settings. When clicked, these usually open untrusted pages or cause download/installation of unwanted, potentially malicious applications. Typically, installed adware displays various advertisements such as coupons, banners, surveys, pop-up ads, etc.
Users tend to download and install software like KeyWordsSearch inadvertently. KeyWordsSearch is distributed through fake Adobe Flash Player installers. Therefore, it operates not only as adware but also as a browser hijacker. Research shows that this app also promotes a fake search engine and might collect data. Like most applications of this type, KeyWordsSearch is designed to display intrusive advertisements. KeyWordsSearch is a potentially unwanted application (PUA) and part of the AdLoad adware family.