Nope ..
The 3d PDF is an image not an actual model ...
You can measure and do other things with the Adobe, but converting it into a 3d model or step isn't one of them ..
It is possible to export STEP directly from 3D pdf.
Use trial Adobe Acrobat + Tetra4D Converter.
However, depends on the quality 3D pdf file (setup while export to 3D pdf).