QBot — PDF malware analysis

Static analysis result for SHA-256 ba051fcf5560f394…

MALICIOUS

PDF

116.2 KB Created: 1970-01-01 03:00:00 +03:00 Authoring application: FPDF 1.85
MD5: e8d87d4c25597afd5ad75bd196602313 SHA-1: 355cf0c7edec027eb72ae971757bfe59ad0610b3 SHA-256: ba051fcf5560f3942e7d0711d1b0a891c5069c0766a4ed8b8f19b8f68cfd2807
160 Risk Score

Malware Insights

QBot · confidence 95%

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment

The PDF file contains multiple invisible links pointing to a ZIP archive hosted on an IP address. ClamAV identifies this as Pdf.Trojan.QBot, and heuristics indicate it's an image-based lure designed to trick users into downloading a payload. The embedded URL is the primary indicator of the malicious payload delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0274

Heuristics 5

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • ClamAV: Pdf.Trojan.QBot-9981055-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Trojan.QBot-9981055-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 116 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://85.239.54.5/Summary_5658050_12192022.zip