use warnings;
use strict;

my %NX_NTF_vars;
my $sec;
while (<DATA>) {
    chomp;
    if (/^SECTION=(\w+)/) {
        $sec = $1;
    }     
    if (/^NX_NTF_/) {
        my ($key, $value) = split("=", $_);
        $NX_NTF_vars{$sec}{$key} = $value;
    }
}

use Data::Dumper;
$Data::Dumper::Sortkeys=1;
print Dumper(\%NX_NTF_vars);

__DATA__
-----
SECTION=cr
NX_NTF_ID=400017
NX_NTF_PRODUCER_ID=cr
NX_NTF_PERSISTENT_ID=cr:400017
NX_NTF_NEW_DELAY_LOG=
-----
SECTION=cnt
NX_NTF_ID=F9F342055699954C93DE36923835A182 UUID String
NX_NTF_PRODUCER_ID=cnt
NX_NTF_PERSISTENT_ID=cnt:F9F342055699954C93DE36923835A182
NX_NTF_LAST_MOD_DT=02/04/2013 13:52:27