Malicious PDF — malware analysis report

Static analysis result for SHA-256 41848d4142bc1bb9…

MALICIOUS

PDF

16.3 KB Created: 2021-06-05 09:08:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 67f9de2ff949ae20d4b3e2308d3707f8 SHA-1: b3d3227ae422596744f3221b3a9566bb4869c527 SHA-256: 41848d4142bc1bb923887879ba936b756c90cae7a53e9099136d443cec810b99
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 that redirects through a URL shortener, indicating an attempt to obscure the final destination. While the document body is largely unreadable binary data, the heuristics strongly suggest a malicious intent to redirect the user to an external resource.

Machine Learning

  • Nyx PDF Classifier clean score 0.0655

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 16 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/nDzJ 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_off00002dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFF 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

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