Please bear in mind that Autodesk invented the DWF format as a non-editable format to view an AutoCAD file. Anyone who creates a DWF file does so with the express purpose of preventing its import into other systems to edit or change the file.
DWF is Autodesk’s own PDF, so to speak. It is an imprecise format that gives an exact visual representation but intentionally does not provide precision geometry.
Since there are always hackers who want to crack file formats, just for the sheer challenge of doing so, it is possible to find programs cracking DWF to DXF.
There are legitimate file viewers to see DWF files available on both Mac and Windows: