Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c85935b6c17bfb5…

MALICIOUS

PDF

81.8 KB Created: 2021-06-30 08:36:21 +03:00 Authoring application: Wanda Howell (via Samuel Howell) First seen: 2026-06-04
MD5: 076c394d6eacc2687c728f089d30ec5a SHA-1: 31cf81a5f94839706764b721a88ef041cf724f94 SHA-256: 8c85935b6c17bfb5b382db87b892347101c915df92d89fb57bd094520fe0a32a
62 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3780

Heuristics 4

  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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 81 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 http://tcsz.clockodiles.com In PDF document text