/usr/share/perl5/Perlbal/ is in libperlbal-perl 1.80-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Perlbal/AIO.pm
/usr/share/perl5/Perlbal/BackendHTTP.pm
/usr/share/perl5/Perlbal/Cache.pm
/usr/share/perl5/Perlbal/ChunkedUploadState.pm
/usr/share/perl5/Perlbal/ClientHTTP.pm
/usr/share/perl5/Perlbal/ClientHTTPBase.pm
/usr/share/perl5/Perlbal/ClientManage.pm
/usr/share/perl5/Perlbal/ClientProxy.pm
/usr/share/perl5/Perlbal/CommandContext.pm
/usr/share/perl5/Perlbal/FAQ.pod
/usr/share/perl5/Perlbal/Fields.pm
/usr/share/perl5/Perlbal/HTTPHeaders.pm
/usr/share/perl5/Perlbal/ManageCommand.pm
/usr/share/perl5/Perlbal/Manual/
/usr/share/perl5/Perlbal/Manual.pod
/usr/share/perl5/Perlbal/Manual/Configuration.pod
/usr/share/perl5/Perlbal/Manual/Contributing.pod
/usr/share/perl5/Perlbal/Manual/Credits.pod
/usr/share/perl5/Perlbal/Manual/Debugging.pod
/usr/share/perl5/Perlbal/Manual/FailOver.pod
/usr/share/perl5/Perlbal/Manual/HighPriority.pod
/usr/share/perl5/Perlbal/Manual/Hooks.pod
/usr/share/perl5/Perlbal/Manual/Install.pod
/usr/share/perl5/Perlbal/Manual/Internals.pod
/usr/share/perl5/Perlbal/Manual/LoadBalancer.pod
/usr/share/perl5/Perlbal/Manual/Logging.pod
/usr/share/perl5/Perlbal/Manual/Management.pod
/usr/share/perl5/Perlbal/Manual/Plugins.pod
/usr/share/perl5/Perlbal/Manual/ReverseProxy.pod
/usr/share/perl5/Perlbal/Manual/Roles.pod
/usr/share/perl5/Perlbal/Manual/Selector.pod
/usr/share/perl5/Perlbal/Manual/WebServer.pod
/usr/share/perl5/Perlbal/Plugin/
/usr/share/perl5/Perlbal/Plugin/AccessControl.pm
/usr/share/perl5/Perlbal/Plugin/AutoRemoveLeadingDir.pm
/usr/share/perl5/Perlbal/Plugin/Cgilike.pm
/usr/share/perl5/Perlbal/Plugin/EchoService.pm
/usr/share/perl5/Perlbal/Plugin/FlvStreaming.pm
/usr/share/perl5/Perlbal/Plugin/Highpri.pm
/usr/share/perl5/Perlbal/Plugin/Include.pm
/usr/share/perl5/Perlbal/Plugin/LazyCDN.pm
/usr/share/perl5/Perlbal/Plugin/MaxContentLength.pm
/usr/share/perl5/Perlbal/Plugin/NotModified.pm
/usr/share/perl5/Perlbal/Plugin/Palimg.pm
/usr/share/perl5/Perlbal/Plugin/Queues.pm
/usr/share/perl5/Perlbal/Plugin/Redirect.pm
/usr/share/perl5/Perlbal/Plugin/Stats.pm
/usr/share/perl5/Perlbal/Plugin/Throttle.pm
/usr/share/perl5/Perlbal/Plugin/Vhosts.pm
/usr/share/perl5/Perlbal/Plugin/Vpaths.pm
/usr/share/perl5/Perlbal/Plugin/XFFExtras.pm
/usr/share/perl5/Perlbal/Pool.pm
/usr/share/perl5/Perlbal/ReproxyManager.pm
/usr/share/perl5/Perlbal/Service.pm
/usr/share/perl5/Perlbal/Socket.pm
/usr/share/perl5/Perlbal/SocketSSL.pm
/usr/share/perl5/Perlbal/TCPListener.pm
/usr/share/perl5/Perlbal/Test/
/usr/share/perl5/Perlbal/Test.pm
/usr/share/perl5/Perlbal/Test/WebClient.pm
/usr/share/perl5/Perlbal/Test/WebServer.pm
/usr/share/perl5/Perlbal/UploadListener.pm
/usr/share/perl5/Perlbal/Util.pm