/usr/lib/python2.7/dist-packages/pdfminer/pdfparser.py is in python-pdfminer 20110515+dfsg-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/pdfminer/../../../../share/pyshared/pdfminer/pdfparser.py