Upload pdf file to firebase storage

[Den]

My example:

var storageRef =  firebaseService.storage.ref().child('strg');

var contentText = 'Anything text with spaces and line wrapping';

var contentHTML = '<span><h1>Any html text with tables</h1></span>';

//I tried all this variants

//1)

var blob = new Blob([$.base64('encode', "Hello world")], {type:"application/pdf;charset=UTF-8"});

//2)

var blob = new Blob([contentText], {type:"application/pdf;charset=UTF-8"});
//3)
var blob = new Blob([contentHTML], {type:"application/pdf;charset=UTF-8"});
//for 1,2,3
storageRef.child('test.pdf').put(blob, {contentType: 'application/pdf'});


//4)
var blob = new Blob([contentText], {type:"application/pdf;charset=UTF-8"});
var file = new File([blob], "test.pdf");

//for 4)
storageRef.child('test.pdf').put(file, {contentType: 'application/pdf'});

In the issue a file uploaded, but he not opens from Adobe Acrobat.
But if are open him from text editor, then content outputted.

Please, help