Malicious PDF — malware analysis report

Static analysis result for SHA-256 a693105fa76412ab…

MALICIOUS

PDF

22.9 KB Created: 2021-06-05 09:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b9853a7d9069538c9b05b5396f6fc6e0 SHA-1: 505418273d38a2855a1131107ec979d13e343e83 SHA-256: a693105fa76412abc6b3fd94d9cdee5ef337f0475d47ff34f175dafde0531106
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, a common tactic for phishing or malware delivery. It contains a clickable link disguised within the image, which redirects through a URL shortener. While the URL shortener itself is benign, the technique is indicative of malicious intent to obscure the final destination. No scripts were extracted, but the PDF structure and heuristics strongly suggest an attempt to trick the user into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.1050

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 22 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://dozodor.page.link/jDdU 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_off00004845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4845 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

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