"In order to redeliver the package, he continued, the employee would have to read aloud a code the shipping company would email." "The caller, whose voice sounded like a middle-aged man, told the employee that he was a delivery driver with an urgent package destined for one of the company locations, but that nobody was there to receive the package, and he asked for a new delivery address at the employee's office location," Sophos researcher Andrew Brandt said. Way Too Vulnerable: Uncovering the State of the Identity Attack SurfaceĪchieved MFA? PAM? Service account protection? Find out how well-equipped your organization truly is against identity threats Supercharge Your Skills "The samples we have observed using this technique are primarily disguised as multi-factor authentication (MFA) notifications, which lure their victims into scanning the QR code with their mobile phones to gain access," Trustwave said last week. ![]() The development comes amid a spike in phishing campaigns using QR codes to propagate malicious URLs, a technique called qishing. While real-world attacks leveraging MalDoc in PDF were observed a little over a month ago, there's evidence to suggest that it was being experimented (" DummymhtmldocmacroDoc.doc") as early as May, Dormann highlighted. At which point they'll be learn that macros are disabled." "As such, the user will have to click 'Enable Editing' to exit Protected View. "When a document is downloaded from the internet or email, it'll carry a MotW," security researcher Will Dormann said. It's not immediately clear what malware was distributed in this fashion. Put differently the PDF document embeds within itself a Word document with a VBS macro that's designed to download and install an MSI malware file if opened as a. The end result is a valid PDF file that can also be opened in the Word application. This entails adding an MHT file created in Word and with a macro attached after the PDF file object. Such specially crafted files are called polyglots as they are a legitimate form of multiple different file types, in this case, both PDF and Word (DOC). "If the file has a configured macro, by opening it in Word, VBS runs and performs malicious behaviors." ![]() "A file created with MalDoc in PDF can be opened in Word even though it has magic numbers and file structure of PDF," researchers Yuma Masubuchi and Kota Kino said. The sneaky method, dubbed MalDoc in PDF by JPCERT/CC, is said to have been employed in an in-the-wild attack in July 2023. ![]() Cybersecurity researchers have called attention to a new antivirus evasion technique that involves embedding a malicious Microsoft Word file into a PDF file.
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