The Adobe Acrobat Extension for Chrome isn't used for embedded PDF documents.
When a PDF is embedded in an HTML page, the Adobe Acrobat Chrome extension isn't used to load the PDF, Chrome's Built-In PDF viewer is used instead. This inconsistency in the display of PDF documents and their features makes it confusing for our users. The below simple HTML will demonstrate the issue.
<object data="embedded.pdf" width="1000" height="800"></object>
This occurs when using the object and the embed tags.
Chris Hughes shared this idea