Frequency
6
occurrences
First Seen
January 19, 2026
Last Seen
January 20, 2026
Related Threat Clusters
-
PDFSIDER Malware Used to Evade Antivirus and EDR Systems
PDFSIDER is a newly identified backdoor malware that allows attackers to maintain long-term control over Windows systems while evading detection by antivirus and endpoint detection and response tools. It employs trusted…
6 articles · Updated January 19, 2026 -
PDFSider Malware Targets Fortune 100 Finance Firm with Covert Backdoor Access
A new malware strain named PDFSider has been deployed on the network of a Fortune 100 company in the finance sector. The attackers utilized social engineering tactics to gain remote access and installed an encrypted…
2 articles · Updated January 19, 2026 -
LinkedIn Messaging Used in Phishing Campaign to Distribute Malware
A phishing campaign is utilizing LinkedIn private messages to deliver Remote Access Trojans (RATs) through a legitimate open-source penetration testing tool. Cybersecurity researchers from ReliaQuest have identified…
9 articles · Updated January 20, 2026
Recent Intelligence Reports
- Threat Actors Leverage LinkedIn Messaging To Deliver Sophisticated Malware — Linkedin · January 20, 2026
- New PDFSider Windows malware deployed on Fortune 100 firm's network — Bleepingcomputer · January 19, 2026
- Researchers Uncover PDFSIDER Malware Built for Long-Term, Covert System Access — Infosecurity-Magazine · January 19, 2026
- PDFSIDER Malware Actively Used by Threat Actors to Bypass Antivirus and EDR Systems — Cybersecuritynews · January 19, 2026
- PDFSIDER Malware Actively Used by Threat Actors to Bypass Antivirus and EDR Defenses — Cyberpress · January 19, 2026
- PDFSIDER Malware Actively Exploited to Evade Antivirus and EDR Defenses — Gbhackers · January 19, 2026