It seems that it is from United States Postal services. It is a spam email. User can receive such a email as shown below.
This email has a malicious file as an attachment in a zip format. The file comes with a Microsoft xls file icon.
If user run the file then it asks for below http request
This script contains additional urls. From where it downloads and executes additional malwares on the affected machine.
The data identified by the above URL was then requested from the remote web server.
It then downloads and executes Rogueware on the affected machine.
More information about remote host server.
Person: Private Person
IP Country Germany
IP Address 184.108.40.206