/usr/lib/perl5/auto/Authen/Krb5/autosplit.ix is in libauthen-krb5-perl 1.9-3build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # Index created by AutoSplit for blib/lib/Authen/Krb5.pm
# (file acts as timestamp)
1;
|