Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c0fa59d0417f543…

MALICIOUS

PDF

139.6 KB Created: 2023-12-13 01:25:31 +08:00 Authoring application: ReportLab PDF Library - www.reportlab.com First seen: 2026-05-13
MD5: 922d0a2e1bd9ea4dcec5dbdcff25546c SHA-1: 31f676cc5b235e511126d12616a25f1ef7beda70 SHA-256: 4c0fa59d0417f543444a338654cf5a3a1f7bf1aab9c900ade77aba15af0f7343
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a single non-reputable link. This suggests the document's primary purpose is to trick the user into navigating to a malicious URL. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9542

Heuristics 3

  • 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 139 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Image-only PDF lure with a single link to a non-reputable host medium PDF_IMAGE_LURE_NONREPUTABLE_LINK
    PDF is image-heavy with little real text and its only clickable action is a single external link to a host that is not known-good. This is the canonical malspam carrier shape — a screenshot-like 'click to view' page whose sole purpose is to funnel the victim to one redirect/landing URL on a compromised or throwaway domain. Flagged suspicious rather than malicious because the link alone (no shortener / typosquat / brand path) is the only corroborator beyond the image lure.
  • 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://curtainsblindsdesign.com.au/is/?jlLR6VadRAJop In PDF document text
    • http://www.reportlab.com1In PDF document text
    • http://www.reportlab.comIn PDF document text