/etc/apparmor.d/abstractions/perl is in apparmor 2.7.102-0ubuntu3.
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 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | # ------------------------------------------------------------------
#
#    Copyright (C) 2002-2009 Novell/SUSE
#    Copyright (C) 2009 Canonical Ltd.
#
#    This program is free software; you can redistribute it and/or
#    modify it under the terms of version 2 of the GNU General Public
#    License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
  # a few files typically required for perl scripts
  /usr/bin/perl                  rmix,
  /usr/bin/perl[0-9].[0-9].[0-9] rmix,
  /usr/lib{,32,64}/perl5/**         r,
  /usr/lib{,32,64}/perl{,5}/**.so*  mr,
  /usr/share/perl/**             r,
  /usr/share/perl5/**            r,
  /etc/perl/**                   r,
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