Feeds

Mac malware uses Windows-style PDF camouflage ruse

Pops open fanboi backdoors as they look at Chinese island

Internet Security Threat Report 2014

Mac malware creators are adopting Windows malware camouflage trickery in a bid to trick users into running their malicious creations.

Boobytrapped PDF files have long been a problem for Windows users. The OSX/Revir-B Trojan reapplies this approach towards Mac fans, who may be less familiar with the ruse.

The malware payload is an Macintosh application file that poses as a PDF. If opened, the file presents a Chinese language document concerning the disputed Diaoyu (Senkaku) Islands. Both China and Japan claim sovereignty of the disputed territory.

While users are perusing the text the malware attempts to install a backdoor Trojan horse.

The malware was submitted to VirusTotal, possibly after the original author tested to see whether it was detected by security firms. VirusTotal routinely samples files submitted through its service to security firms, who have began analysing the code.

"This malware may be attempting to copy the technique implemented by Windows malware, which opens a PDF file containing a ".pdf.exe" extension and an accompanying PDF icon," according to virus analysts at net security firm F-Secure.

"The sample in our hands does not have an extension or an icon yet. However, there is another possibility … extension and icon could have been lost when the sample was submitted to us. If this is the case, this malware might be even stealthier than in Windows because the sample can use any extension it desires."

It may be that the malware was designed to be distributed via email but this is unclear.

Mistakes in the code means that the malware fails to execute, according to net security firm Sophos, adding that there is no doubt the file is malicious. ®

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
You really need to do some tech support for Aunty Agnes
Free anti-virus software, expires, stops updating and p0wns the world
Privacy bods offer GOV SPY VICTIMS a FREE SPYWARE SNIFFER
Looks for gov malware that evades most antivirus
Patch NOW! Microsoft slings emergency bug fix at Windows admins
Vulnerability promotes lusers to domain overlords ... oops
HACKERS can DELETE SURVEILLANCE DVRS remotely – report
Hikvision devices wide open to hacking, claim securobods
Astro-boffins start opening universe simulation data
Got a supercomputer? Want to simulate a universe? Here you go
State Dept shuts off unclassified email after hack. Classified mail? That's CLASSIFIED
Classified systems 'not affected' - but, is this reconnaissance?
prev story

Whitepapers

Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
How to determine if cloud backup is right for your servers
Two key factors, technical feasibility and TCO economics, that backup and IT operations managers should consider when assessing cloud backup.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
How to simplify SSL certificate management
Simple steps to take control of SSL certificates across the enterprise, and recommendations centralizing certificate management throughout their lifecycle.