Sophisticated Mishing Campaign Leveraging Malicious PDFs Poses a Significant Threat to Organizations Across 50+ Countries
DALLAS, Jan. 27, 2025 /PRNewswire/ -- Zimperium, the world leader in mobile security, has uncovered an advanced mishing (mobile-targeted phishing) campaign impersonating the United States Postal Service (USPS), exclusively targeting mobile devices. Spearheaded by Zimperium's zLabs threat research team, the investigation reveals an unprecedented method of obfuscation used to deliver malicious PDF files designed to steal credentials and compromise sensitive data.
The campaign exploits the trust that users place in official-looking communications and the PDF format. Cybercriminals embed malicious elements into PDFs, using social engineering tactics to deceive recipients. On mobile devices, where users may have limited visibility into file contents before opening them, the risks of data breaches, credential theft and workflow disruptions significantly increase.
"Although USPS has no involvement, cybercriminals exploit its trusted name to mislead and target users," said Nico Chiaraviglio, zLabs Chief Scientist at Zimperium. "This campaign shows the growing sophistication and continued rise of mishing attacks, emphasizing the need for proactive mobile security measures."
Key Findings:
Tips to Verify the Message Authenticity
To protect against SMS and PDF phishing attempts like this, follow these best practices:
For a deeper dive into this campaign and how to safeguards enterprises against PDF and mishing threats, read the detailed blog.
About Zimperium
Zimperium is the world leader in mobile security. Purpose-built for mobile environments, Zimperium provides unparalleled protection for mobile applications and devices, leveraging AI-driven, autonomous security to counter evolving threats including mobile-targeted phishing (mishing), malware, app vulnerabilities and compromise, as well as zero day threats. As cybercriminals adopt a mobile-first attack strategy, Zimperium helps organizations stay ahead with proactive, unmatched protection of the mobile apps that run your business and the mobile devices relied upon by your employees. Headquartered in Dallas, Texas, Zimperium is backed by Liberty Strategic Capital and SoftBank. Learn more at www.zimperium.com and connect on LinkedIn and X (@Zimperium).
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SOURCE Zimperium