/usr/lib/pyshared/python2.7/scanext.so is in hplip 3.12.6-3.1+deb7u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/pyshared/python2.7/../../python2.7/dist-packages/scanext.so
/usr/lib/pyshared/python2.7/../../python2.7/dist-packages/scanext.so