Generally, PDF files are safe, although they can indeed contain embedded code ... Pretty much all Office 365 file extensions can potentially contain malware, like DOC, DOCX, XLS, XLSX, and so on.
It's one of the best apps to use if you need to convert a JPG file to PDF or a PDF to 19 other file formats, including DOCX, EPUB, HTML, and XLSX. Although the app comes complete with over 40 ...