Extract vector coordinates from PDF Doc

Is it possible to have a script extract the coordinates of vector paths (lines and curves mostly) from the specific layers of a pdf and to export that information to an XML file?

I have noticed comments where you can get the quadrants of text using "getPageNthWordQuads." I am looking for something similar where I can extract all paths, lines, shapes and other objects within the pdf. This can be achieved in Adobe Illustrator using a script but I am looking for something web-based.

Thanks,
Rebecca