Is it possible to create a PDDoc object directly from the content stream (or byte array) in memory instead from a physical file?

I want to read a pdf that has been saved to the database and if it has been signed display the signer's name and the sign date to the user.  If the file is first saved to a physical location I can do this with the SDK/ JSObject it there anyway I can do this without a physical file?  This is part of a C# application.