That’s exactly PrimoPDF, a PDF creator. Maybe you think it’s difficult and expensive to create that kind of files.
PrimoPDF makes you realize that it’s not so difficult, in fact is easy and cheap... exactly free. You only have to choose the document you want to have as pdf, print it and when you have to choose the printer, choose Primo PDF printer, then, a menu will appear and you will be able to setup the properties of the file which will be created.
Furthermore, you will be able to protect the documents with a password, so it will be opened only by those people you want.
Finally, add the author, and some other notes so your file will be totally customized.