How to hide in this case the top bar of a pdf viewer?

This is my controller

if (!response.CodError) {
    $scope.datosImprimir.Resultado.PDF = response.Valor;
    $scope.contenido = $sce.trustAsHtml('<embed width="100%" alt="pdf" src="data:application/pdf;base64,' + response.Valor + '" class="pdfImprimir" pluginspage="http://www.adobe.com/products/acrobat/readstep2.html">');

} else {
    bootbox.alert($scope.datos.Errores[response.CodError]);
 }

and my view:

<div id="contenedor" ng-bind-html="contenido"></div>

Eh looking around and I tried everything I found but nothing helped me