"USPS postage labels invoice" spam / indigocellular.com and jadecellular.com

This fake USPS message leads to malware on indigocellular.com:

From:     Elmer Cross USPS_Shipping_Info@usps.com
Date:     23 March 2012 13:42
Subject:     USPS postage labels invoice.

Acct #: 5047483

Dear client:

This is an email confirmation for your order of 1 online shipping label(s) with postage. Your credit card will be charged the following amount:

Transaction ID: #1412337
Print Date/Time: 03/11/2012 02:30 AM CST
Postage Amount: $35.74
Credit Card Number: XXXX XXXX XXXX XXXX

Priority Mail Regional Rate Box B # 0583  1282  5071  3122  8696  (Sequence Number 1 of 1)

   

If you need further assistance, please log on to www.usps.com/clicknship and go to your Shipping History or visit our Frequently Asked Questions .

Refunds for unused postage-paid labels can be requested online up to 7 days after the print date by logging on to your Click-N-Ship Account.

Thank you for choosing the United States Postal Service

Click-N-Ship: The Online Shipping Solution

Click-N-Ship has just made on line shipping with the USPS even better.

New Enhanced International Label and Customs Form: Updated Look and Easy to Use!

* * * * * * * *

This is an automatically generated message. Please do not respond 

The malicious payload is on indigocellular.com/showthread.php?t=73a07bcb51f4be71 hosted on 209.59.218.102 (Endurance International, US). Blocking the IP will prevent other malware on the IP from being a threat.

Update: another current version of this spam redirects to jadecellular.com/showthread.php?t=73a07bcb51f4be71 on 72.249.104.75 (Networld Internet, US)