/usr/lib/python2.7/dist-packages/cryptography_vectors/asymmetric/PKCS8/withdompar_private.pkcs8.pem is in python-cryptography-vectors 0.6.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | -----BEGIN PRIVATE KEY-----
MGACAQAwGAYHKoZIzj0CAQYNKwYBBAHAbQMBAgkAIQRBMD8CAQEEOgG97/hDkXbJ
tgF36JmM7NliJIlDFzTm69KYouwhjPOsh6hKo5NPTtsmHafplOqpUf0TyAhB1Q88
3xA=
-----END PRIVATE KEY-----
|