PDFSearchz aims to be a reliable portal where you can quickly search PDF files or easily convert a file into PDF. However, it is actually a browser hijacker that will attempt to redirect your browser search and homepage to pdf-searchz.com which is a fraudulent search engine. Its search results will send you to malicious websites to get money from you or infect your computer further. It may also track your web browsing activity, flood you with intrusive advertisements, and will prevent you from changing your settings back.
PDFSearchz is usually installed through bundled software without you knowing. Remove it immediately!