Logos needs to provide for the import of PDFs as personal books. Microsoft Word is fine as far as it goes, but there are many, many public domain resources that could be used to quickly augment a library.
Would be great but it will never happen
There are many reasons a PDF isn't a good fit for Logos. Far better is to convert the PDF to Word and then import it.
And when you convert a PDF to Word yourself, you will quickly see why it cannot be automated.