Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ea91fba825e558d…

MALICIOUS

PDF

39.7 KB Created: 2021-05-26 10:25:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 54c59c89cb386e98c86bc6c49993d7c8 SHA-1: d084356ab020c8f29a6a575890871b24ba3ea059 SHA-256: 3ea91fba825e558d03e9fc691129f6d7ab3b1b1a0581b8667a0ad4f6f95a08fa
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is an image-only document designed as a lure, containing a clickable link that redirects through a URL shortener. This technique is commonly used for phishing or to download further malicious content. No scripts were extracted, but the structure suggests an attempt to bypass content analysis by presenting an image that requires user interaction to reveal the malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0740

Heuristics 3

  • Image-only PDF lure links through URL shortener high PDF_IMAGE_LURE_SHORTENER_LINK
    PDF is image-heavy with little real text and its clickable action points to a URL shortener. This is a high-confidence credential-phishing carrier shape: the visible page is a screenshot-like prompt while the destination is hidden behind redirect infrastructure.
  • 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 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://newselonm.page.link/bC9X In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F57 16076 bytes
SHA-256: a17ccbf6d4393665c79f690db737f36045b2b6e6f4932138786349cd6b4a28d7

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