Uploading a file in TinyMCE - asp.net

Question

In ASP.NET MVC I am using TinyMCE 4.7.8 (2018-02-26). I want to upload a Pdf/Doc/Excel file and add an anchor for it at editor HTML. I am able to upload the image and get back the uploaded url to add image at editor this works fine.
I am looking answer for two things a) Is link plugin is the correct way to upload the pdf and doc into system since I have not found any specific plugin for file handling in community edition! b) In my method filePicker I am creating dynamic html to handle the posted file, again it this approach is just a work around or there any way in TinyMCE to handle file type?
tinymce.init({
selector: ".TinyMCEEditor",
branding: false,
height: 500,
theme: "modern",
plugins: [
"advlist autolink lists link image charmap print preview hr anchor pagebreak",
"searchreplace wordcount visualblocks visualchars code fullscreen",
"insertdatetime nonbreaking save table contextmenu directionality",
"emoticons template paste textcolor colorpicker textpattern"
],
toolbar1: "insertfile undo redo | styleselect | bold italic | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | link image",
toolbar2: "print preview | forecolor backcolor emoticons",
file_browser_callback_types: 'file image',
automatic_uploads: true,
images_upload_url: '/Content/UploadContentImg',
file_picker_types: 'file image',
file_picker_callback: function(callback, value, meta) {
debugger;
// Provide image and alt text for the image dialog
if (meta.filetype == 'image') {
imageFilePicker(callback, value, meta);
}
// Provide file and text for the link dialog
if (meta.filetype == 'file') {
filePicker(callback, value, meta);
//callback('mypage.html', { text: 'My text' });
}
// Provide alternative source and posted for the media dialog
if (meta.filetype == 'media') {
//callback('movie.mp4', { source2: 'alt.ogg', poster: 'image.jpg' });
}
},
templates: [{
title: 'Test template 1',
content: 'Test 1'
},
{
title: 'Test template 2',
content: 'Test 2'
}
]
});
function imageFilePicker(callback, value, meta) {
};
function filePicker(callback, value, meta) {
var input = document.createElement('input');
input.setAttribute('type', 'file');
//input.setAttribute('accept', 'image/*');
input.click();
debugger;
};