elevenpaths.com/labstools/foca/index.html

The FOCA is a network infrastructure mapping tool that can be used for OSINT. It can analyze metadata from various files, including doc, pdf and ppt files. FOCA can also enumerate users, folders, emails, software used, operating system and other useful information.

LINK: https://www.elevenpaths.com/labstools/foca/index.html