Malicious PDF — malware analysis report

Static analysis result for SHA-256 7774de5ebe95e5bd…

MALICIOUS

PDF

17.3 KB Created: 2021-06-05 09:05:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d6eda0ea50d5a6f94ae235b7fef4bc0e SHA-1: f54325dfc1a9c87546125090db892eaa8aeb4307 SHA-256: 7774de5ebe95e5bd4d9c72eb5209febf8814ee92cab8dbd4367d64374cbab93a
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 campaigns. It contains a clickable link that utilizes a URL shortener, directing users to an external site. While no scripts were extracted, the structure and the presence of a shortened URL strongly suggest an attempt to redirect users to a malicious destination, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0657

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 17 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://1fst.page.link/JZVk 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_off00003228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3228 12348 bytes
SHA-256: 2db37fb787a945546789330df5214897e94a45d80a14f9fc35bb79df3cd5f8ca

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