I have a requirement wherein I need to embed attached files into a PDF. So this could be anything from Word Documents, Images, Excel spreadsheets, to even other attached PDFs. 

So this is basically how it goes: Start a case => enter all needed info => attach all required files => generate PDF file. Within that PDF file is the info regarding the case and the list of all attached files. When you click one of those attached files in the list within PDF, it should open that particular file. It should be noted that the file should be embedded within the PDF itself and we're not using a hyperlink.