For the moment there is only a small hack that you can do to be able to display download links on your product page. I learned about it on the magento forums and adjusted the code to fit my theme.

So if you’re using the default magento theme, do the following:

1. create a new folder under media/catalog/product/ named pdf so it should be media/catalog/product/pdf/

2. Upload your pdf document to yourshop/media/catalog/product/pdf so it should be yourshop/media/catalog/product/pdf/pdfdocument.pdf

3. go to your product managing page under admin panel and edit the product. Now in the short description box you must add the following code:

<div class="divider"></div>
<h4>Downloads</h4>
<div class="short-description"><a title="Download ATmega88 dev board User Guide" href="http://www.youritronics.com/shop/media/catalog/product/pdf/atmega88-dev-userguide.pdf" target="_blank">User Guide.pdf (392 Kb)</a></div>

Remember the description box adds <BR> for every new line you create, so place the code immediately after your last character from product description to get a nice alignment. Now your Download section should appear immediately after your short description.

Disclaimer: I don’t condone modifying and distributing copyright files, this is simply provided so you can view the plain source to ensure your script isn’t doing anything malicious on your property ie server.

And here is the script and Link to authors page.

<?php
echo "\nDECODE nested eval(gzinflate()) from Taree Internet \n\n";
echo "1. Reading coded.txt\n";
$fp1 = fopen ("coded.txt", "r");
$contents = fread ($fp1, filesize ("coded.txt"));
fclose($fp1);
echo "2. Decoding\n";
while (preg_match("/eval\(gzinflate/",$contents)) {
$contents=preg_replace("/<\?|\?>/", "", $contents); eval(preg_replace("/eval/", "\$contents=", $contents)); } echo "3. Writing decoded.txt\n"; $fp2 = fopen("decoded.txt","w"); fwrite($fp2, trim($contents)); fclose($fp2);
?>

Now the first step you need to take is to save this code in a file named decrypt.php

Second step is to save your encoded file inside a file name coded.txt (make sure you get all the code, i noticed when working with notepad and very long code lines some of the code gets skiped, and you dont want that to happen as the script wont work)

And the third step is to create an empty file named decoded.txt

Now upload all three files on your webserver and chmod the decoded.txt file with 666

Next you need to run the decrypt.php file from your server like this : http://yourdomain.com/path-to-script/decrypt.php. It should display a message about the operation and say “Writing Decoded.txt”. Now you are done the decoded.txt file that was empty should now have inside it the HTML code that you need to place inside your footer.php file and edit at your needs.