The pdf in virtuemart are generated by the library HTML2FPDF and not work properly with utf-8 when creating pdf's from the online shop, encoding problems with accents, ñ, etc ...

The trick to solving this problem is simple is to implement the function utf_decode () from php to format the text output.

For that we open administrator / components / com_virtuemart / html / shop.pdf_output.php and line 138 add the function:

  $ Pdf-> WriteHTML (utf8_decode ($ html));