Malicious PDF — malware analysis report

Static analysis result for SHA-256 5950112e187a2cc8…

MALICIOUS

PDF

19.3 KB Created: 2021-05-28 16:29:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: cace5b3f2937f11026d6bab74af96e43 SHA-1: 10fcfce746fe7daae5308f9f59b15c8cce554510 SHA-256: 5950112e187a2cc8d2bb84fb048780a81d6892756ea631ab91aa7ca1c91c9c04
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is an image-only lure, a common tactic for phishing or malware delivery. It contains a single embedded URL that redirects through a URL shortener, which is a high-priority indicator. The document's structure and size are consistent with this type of attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0046

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 19 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://zokon.page.link/sB4n 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_off00002a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9C 17152 bytes
SHA-256: b8fdf48eda3ef6266dd69074895426cb948d165eff8495f029e8a6680c60ce7a

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