As PayPal give your name and e-mail address away to its merchants (i.e: they effectively make it public) - we recommend our clients to use a throw-away or time-limited address for paypal accounts. The spam will be sent to your address using your full name so:
To: "Anthony Other" <another@example.com>
Currently the spam is promoting a fake goods site with the connivance of an ISP based in Hong Kong.
All customers with SMTP posting accounts can request throw-away and time-limited addresses. A throw-away address is preferable in this case as a time-limited address must be promptly updated before it expires. An expired address can cause you to be temporarily locked out of your PayPal account, requiring a telephone call to PayPal customer services.