Have you checked that you get the correct data and can print it to the screen instead of a PDF file?

use strict;
use PDF::API2::Simple;

my %data = (...);

#my $pdf = PDF::API2::Simple->new( file => 'file.pdf' } 
foreach my $keys( sort { $data{$a} <=> $data{$b}} keys %data ){
    print $data{$keys}{'Name'}, "\n";
}
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The next thing would be to check that you can actually print to the PDF file. Try printing a plain list to a PDF file:

use strict;
use PDF::API2::Simple;

my @names = (Diana Bruce Clark);

my $pdf = PDF::API2::Simple->new( file => 'file.pdf' } 
foreach my $name( @names ){
     $pdf->text($name}); 
}
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One of the two programs should work for you and should help you determine where your problem lies, in the data or in writing the data to the PDF.

Yes, I tried printing a plain text something like this: $pdf->text( 'Hello PERL', x => 300, y => 300 ); The plain text printing perfectly. Is there any syntax to print the hash ?

If you need to supply coordinates, why don't you supply them when you print in your loop?

Try maybe printing stuff into separate lines?

my $offset = 300;
for my $line (@names) {
    $pdf->text( "Hello PERL", x => 300, y => $offset );
    $offset = $offset + 50; # move to "next line"
};
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I chose 50 by random, maybe you want 12 (points) or 24.

You could create a table of the data with PDF::Table

#!/usr/bin/perl
use strict;
use PDF::API2;
use PDF::Table;

# test hash
my @cols = qw(name class other);
my %data = ();
for my $i ('001'..'100'){
  for (@cols){
    $data{'id'.$i}{$_} = $_.$i;
  }
};

# create data array 
my @tbl;
push @tbl ,\@cols;
for my $id (sort keys %data){
  push @tbl, [ @{$data{$id}}{@cols} ];
}  

# create pdf
my $pdf = new PDF::API2(-file => "table_of_data.pdf");
$pdf->mediabox(595, 842); # A4
my $page = $pdf->page;
my $pdftable = new PDF::Table;
my (undef, undef, $boty) = $pdftable->table(
     $pdf,
     $page,
     \@tbl,
     x => 50,
     w => 495,
     start_y => 800,
     next_y  => 800,
     start_h => 750,
     next_h  => 750,
     padding => 5,
     padding_right => 10,
);
$pdf->saveas();
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