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Fake CAPTCHA PDFs Spread Lumma Stealer via Webflow, GoDaddy, and Other Domains

Fake CAPTCHA PDFs Spread Lumma Stealer via Webflow, GoDaddy, and Other Domains

Feb 28, 2025 Network Security / Malware
Cybersecurity researchers have uncovered a widespread phishing campaign that uses fake CAPTCHA images shared via PDF documents hosted on Webflow's content delivery network (CDN) to deliver the Lumma stealer malware. Netskope Threat Labs said it discovered 260 unique domains hosting 5,000 phishing PDF files that redirect victims to malicious websites. "The attacker uses SEO to trick victims into visiting the pages by clicking on malicious search engine results," security researcher Jan Michael Alcantara said in a report shared with The Hacker News. "While most phishing pages focus on stealing credit card information, some PDF files contain fake CAPTCHAs that trick victims into executing malicious PowerShell commands, ultimately leading to the Lumma Stealer malware." The phishing campaign is estimated to have affected more than 1,150 organizations and more than 7,000 users since the second half of 2024, with the attacks primarily singling out victims in Nort...
⚡ Weekly Recap: VPN Exploits, Oracle's Silent Breach, ClickFix Surge and More

⚡ Weekly Recap: VPN Exploits, Oracle's Silent Breach, ClickFix Surge and More

Apr 07, 2025 Threat Intelligence / Cybersecurity
Today, every unpatched system, leaked password, and overlooked plugin is a doorway for attackers. Supply chains stretch deep into the code we trust, and malware hides not just in shady apps — but in job offers, hardware, and cloud services we rely on every day. Hackers don't need sophisticated exploits anymore. Sometimes, your credentials and a little social engineering are enough. This week, we trace how simple oversights turn into major breaches — and the silent threats most companies still underestimate. Let's dive in. ⚡ Threat of the Week UNC5221 Exploits New Ivanti Flaw to Drop Malware — The China-nexus cyber espionage group tracked as UNC5221 exploited a now-patched flaw in Ivanti Connect Secure, CVE-2025-22457 (CVSS score: 9.0), to deliver an in-memory dropper called TRAILBLAZE, a passive backdoor codenamed BRUSHFIRE, and the SPAWN malware suite. The vulnerability was originally patched by Ivanti on February 11, 2025, indicating that the threat actors studied the patch a...
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