Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1342069d3d7356e…

MALICIOUS

PDF

25.0 KB Created: 2021-05-28 16:24:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 899734aa62c43d2a904b656b1c75cac0 SHA-1: 3d87d27684737762de804b127c4902a1e9ac022d SHA-256: c1342069d3d7356ee4b322c128a9f3007cdddd7ad4747d12c73f346d6f3193fa
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, msen.page.link, which likely leads to a malicious site. The heuristic 'PDF_IMAGE_LURE_SHORTENER_LINK' specifically flags this behavior.

Machine Learning

  • Nyx PDF Classifier clean score 0.0059

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 24 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/Mki4 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_off000046b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46B6 15352 bytes
SHA-256: 80b151c7b4c124415ba8f6e55728d329057f2b894faad31d9541fe010992d5aa

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