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Corion
<p>As far as I understood OLE embedding and OLE Document Streams (and that never was really far), an embedded object is mostly a screenshot of the representation and a serialized opaque blob of the embedded object. The target machine hopefully has the same OLE-enabled application (that is, Acrobat Reader in your case), and that application is basically called upon to refresh the "preview" bitmap or edit the embedded object if necessary.</p>
<p>At least from this rudimentary understanding, I doubt that there will be a generic way to get at the "embedded file", as the data blob is mostly opaque. Possibly you can write a special case hack for getting at the PDF, as the PDF likely has a distinctive start signature (<c>%%</c>) and contains mostly text and gzipped blobs.</p>
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