at­tach­file – At­tach ar­bi­trary files to a PDF doc­u­ment

Start­ing with PDF 1.3 (Adobe Acro­bat 4.0), PDF files can con­tain file at­tach­ments — ar­bi­trary files that a reader can ex­tract, just like at­tach­ments to an e-mail mes­sage. The at­tach­file pack­age brings this func­tion­al­ity to pdfLaTeX and pro­vides some ad­di­tional fea­tures not avail­able in Acro­bat, such as the abil­ity to use ar­bi­trary LaTeX code for the file icon — in­clud­ing things like \in­clude­graph­ics, tab­u­lar, and math­e­mat­ics. Set­tings can be made ei­ther glob­ally or on a per-at­tach­ment ba­sis. At­tach­file makes it easy to at­tach files and cus­tomize their ap­pear­ance in the en­clos­ing doc­u­ment.
The pack­age sup­ports the Created, Mod­i­fied, and Size keys in the Embed­dedFile’s Params dic­tio­nary.