Try this:
<table width="92" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="33" valign="middle" align="center" style="font-family: Arial, Helvetica, sans-serif; font-size: 14px; color: #2C729E; border:1px solid #2C729E;">
<a href="" style="color: #2C729E; font-weight: bold; text-decoration: none;">Get PDF</a>
</td>
</tr>
</table>
I have the anchor tag on the text instead of around the <td>
itself. It has been a long time since I tested it that way, so I just posted what I know works.
Also, you do know that javascript can't be used in html email right? You'll have to execute that stuff server side before sending.