my $doc = PDF::API2->new( -file => 'mypdf.pdf' );
my $page = $doc->page;
my $txt = $page->text;

my $font = $doc->corefont('OCR A',1); # this font name may be incorrect.. 
$font->encode('latin1');

$txt->font($font,10);
$txt->lead(10);
$txt->text('Print to PDF file in the font set above');

# ....