File output in a field (override)

Good afternoon.

I have a content type with an added field (field type – File).

I upload a PDF file.

The output of this field on the page looks like this:

I can’t manage to replace the file name with an image for downloading.

<span class="file">

<img class="file-icon" alt="PDF Icon" title="application/pdf" src="/modules/file/icons/application-pdf.png">

<a href="http://*****/app-pdf/123.pdf" type="application/pdf; length=2551666">123.pdf</a></span>