Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfeec4a17f47a2d…

MALICIOUS

PDF

35.1 KB Created: 2021-12-18 03:46:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 5d142471647d9b1d603e1f12db481c3d SHA-1: 9d16c2f10400b5512e60cd1990bac136b1da98cc SHA-256: 2cfeec4a17f47a2dd12b677545b89641426f13e470e4447e52cb243b11dc4243
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains a single external URI that, while currently flagged as benign, is part of the attack chain. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely used to redirect users to a malicious site or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5850

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 35 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://feedproxy.google.com/~r/Gsjc/~3/cmwvf4RlXg4/uplcv?utm_term=why+is+my+swamp+cooler+not+getting+cold PDF link annotation

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