FileAttachment PdfMark in Postscript

Thanks for your reply. More infomation below:

I have a VBA tool that writes and adds .eps image files (containing PdfMark text) to Powerpoint 2003, so that when printed using a pdf printer such as Pdf995 or Pdfill (which print via a postscript process) they produce clickable interactive pdfs. So hyperlinks (LNK pdfmark), Java GoForward (ANN pdfmark) and Java GoBack (ANN pdfmark) work. I'm also adding Document Properties (DOCINFO pdfmark) and Bookmarks (OUT pdfmark).

If it's technically possible I'd link to add File attachments, such as other pdfs, excel files etc. to the final pdf.  I've tried inserting an .eps file into powerpoint containing the code below which results in the error message:

"Adobe Reader could not open 'test.pdf' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded)."

%!PS-Adobe-3.0 EPSF-3.0
%%BoundingBox: 0 0 72 72
%%Creator: PDFMark
%%Title: AttachFILE PDFMark
%%BeginProlog
/pdfmark where
{pop} {userdict /pdfmark /cleartomark load put} ifelse
%%EndProlog

/F (c:test.pdf) def
[/_objdef {mstream} /type /stream /OBJ pdfmark
[{mstream} F /PUT pdfmark
[{mstream} << /Type /EmbeddedFile >> /PUT pdfmark

[/_objdef {mfs} /type /dict /OBJ pdfmark
[{mfs} << /Type /Filespec >> /PUT pdfmark
[{mfs} << /F (c:test.pdf) >> /PUT pdfmark
[{mfs} << /EF << /F {mstream} >> >> /PUT pdfmark

[ /Rect [ 216 503 361 612 ]
/Type /Annot
/Subtype /FileAttachment
/FS {mfs}
/ANN pdfmark

%%EOF

So I'm wondering if it is technically possible, or if there is something wrong with the PdfMark?

Thanks,
Steve