Malicious PDF — malware analysis report

Static analysis result for SHA-256 3832083c4f57adba…

MALICIOUS

PDF

18.7 KB Created: 2021-05-28 10:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ef9b70357e06af09af773bcb9973f26b SHA-1: 535c6797f3f192f0dbaedd34e1698ec62fa26daa SHA-256: 3832083c4f57adba35a46d1714db2de520550217349dfae81b7e2b64152b2967
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a single image and minimal text, typical of phishing attempts. It directs users to a URL shortener, which likely leads to a malicious site. No scripts were extracted, but the PDF structure and heuristics indicate a user-interaction-based attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0573

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 18 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://msen.page.link/GLp8 In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AA5 4500 bytes
SHA-256: 402bf721215bc392e091ba16814834d34511187abc4502f180db416847518463

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