/usr/lib/python2.7/dist-packages/zope/mimetype/icons/ms-excel.gif is in python-zope.mimetype 1.3.1-0ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/zope/mimetype/icons/../../../../../../share/pyshared/zope/mimetype/icons/ms-excel.gif