Convert PDF files to DWG files using Command Line

I use pdf2dwg, command line is :

pdf2dwg.exe *.pdf *.dwg

but the dwg file can not open by autocad 2014, why?

Customer
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Thanks for your message, please download "VeryDOC PDF to DWG Converter" from following web page to try, you can use "VeryDOC PDF to DWG Converter" to convert from vector PDF files to vector DWG files,

http://www.verydoc.com/pdf-to-dwg-dxf.html
http://www.verydoc.com/pdf2dwg.zip

after you download it, you can run following command line to convert this PDF file to DWG file,

pdf2dwg.exe D:\downloads\test0.pdf D:\downloads\test0.dwg

Please look at following screenshots,

this is original PDF file,