Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bff3d9676984613…

MALICIOUS

PDF

24.3 KB Created: 2021-06-05 09:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 004bfb9ca8851fc4658ec7d02260d066 SHA-1: 6d03e9cb6351dd9a4ce041a140618d1196c8d626 SHA-256: 7bff3d96769846139206579d0fcf450dc999ca80cdf9c77534e662242b6e2c74
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, a common tactic to trick users into clicking on embedded links. The presence of a URL shortener, specifically 'lasw.page.link/h26k', further supports this, as these are often used to obscure malicious destinations. While the document body is heavily obfuscated and unreadable, the heuristics strongly indicate a phishing or redirection attempt.

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 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://lasw.page.link/h26k 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_off00004e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E33 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

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