Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad1ff0efd9d4290…

MALICIOUS

PDF

27.7 KB Created: 2021-05-28 10:35:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 40d80752c5860320d931104c547f1930 SHA-1: 3ee9288267df49077e5e27b0bc6102b265bd17da SHA-256: 7ad1ff0efd9d4290a3c150d6f64304a9c47f102cd27f76fa6a78dc7eacfe741b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing campaigns. It contains a link that redirects through a URL shortener, which is a common technique to obscure the final destination. No scripts were extracted, but the overall structure suggests an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.1552

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 27 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/tNVe In PDF document text
    • http://www.microsoft.com/typographyMicrosoftIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5755 6952 bytes
SHA-256: 0efe7f2d03fbc2b4f089aebbd514e98732dda6f2993839bfb892e29576630661

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