#!/usr/bin/perl
use warnings;
use strict;

my %hash;
my $header;
while (<>) {
    if (my ($h) = /^(.*):$/) {
        $header = $h;

    } elsif (my ($k, $v) = /^(.*):(.*)$/) {
        $hash{$header}{$k} = $v;
    }
}

use Data::Dumper;
print Dumper \%hash;