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‘You Have Received a 4 Page Fax’ Malware Email

by Brett M. Christensen

This email, which claims to have been sent by cloud-based fax service eFax Corporate, advises you that you have received a 4-page fax. The message suggests that you click a link to read your fax using your PDF reader.

The email includes a fax reference number and caller ID. It also features the eFax Corporate logo.

However, the email has no connection to eFax Corporate and the link does not open a fax message.

Instead, the link opens a compromised website that harbours malware. Once downloaded and installed, this malware may allow criminals to connect to your computer and use it for their own purposes. The malware may download other types of malware and harvest personal information from the infected computer. 
Rather bizarrely, some versions of the malware emails use a spoofed Australian Taxation Office (ATO) email address. Of course, the emails have no connection whatsoever to the ATO.

Variants of these eFax Corporate malware emails have been distributed since at least 2012. Similar malware messages falsely claim to be from other online fax services such as RapidFax and RingCentral.


From: Australian Taxation Office
Subject: eFax message – 4 page(s)
Fax Message [Caller-ID: 562-935-0608]You have received a 4 pages fax at 2015-05-19 08:13:16 AM EST.

* The reference number for this fax is

View this fax using your PDF reader.

Please visit [link removed] if you have any questions regarding this message or your service.

eFax malware email

Importance Notice

After considerable thought and with an ache in my heart, I have decided that the time has come to close down the Hoax-Slayer website.

These days, the site does not generate enough revenue to cover expenses, and I do not have the financial resources to sustain it going forward.

Moreover, I now work long hours in a full-time and physically taxing job, so maintaining and managing the website and publishing new material has become difficult for me.

And finally, after 18 years of writing about scams and hoaxes, I feel that it is time for me to take my fingers off the keyboard and focus on other projects and pastimes.

When I first started Hoax-Slayer, I never dreamed that I would still be working on the project all these years later or that it would become such an important part of my life. It's been a fantastic and engaging experience and one that I will always treasure.

I hope that my work over the years has helped to make the Internet a little safer and thwarted the activities of at least a few scammers and malicious pranksters.

A Big Thank You

I would also like to thank all of those wonderful people who have supported the project by sharing information from the site, contributing examples of scams and hoaxes, offering suggestions, donating funds, or helping behind the scenes.

I would especially like to thank David White for his tireless contribution to the Hoax-Slayer Facebook Page over many years. David's support has been invaluable, and I can not thank him enough.

Closing Date

Hoax-Slayer will still be around for a few weeks while I wind things down. The site will go offline on May 31, 2021. While I will not be publishing any new posts, you can still access existing material on the site until the date of closure.

Thank you, one and all!

Brett Christensen,