/usr/lib/python2.7/dist-packages/PAM-0.4.2.egg-info is in python-pam 0.4.2-12.2ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/../../../share/pyshared/PAM-0.4.2.egg-info