PDFCastle Search is a type of adware that is designed to display intrusive ads and redirect users to sponsored websites. This adware typically infiltrates computers and browsers without the user’s consent, often through software bundling or deceptive online advertisements. Once installed, PDFCastle Search may change browser settings, track user activity, and display pop-up ads, banners, and in-text links on web pages.
PDFCastle Search can infect computers and browsers by being bundled with free software downloads or by being distributed through malicious websites and email attachments. Users may unknowingly install the adware when downloading and installing software from untrustworthy sources or clicking on malicious links. Once installed, PDFCastle Search can hijack browser settings, change the default search engine, and display unwanted advertisements, leading to a decreased browsing experience and potential privacy risks. Users are advised to regularly update their antivirus software and be cautious when downloading software or clicking on unfamiliar links to prevent the installation of adware like PDFCastle Search.