/usr/lib/apache2/modules/mod_wsgi.so is in libapache2-mod-wsgi-py3 3.3-4+deb7u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/apache2/modules/mod_wsgi.so-3.2
/usr/lib/apache2/modules/mod_wsgi.so-3.2