Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ddb2d517b2cf5b…

MALICIOUS

PDF

30.7 KB Created: 2021-05-28 10:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: d8ec400835176092ccb8f68357370d12 SHA-1: 9680dbbd2d585651dd42eb41cff858e5e9fcf5a0 SHA-256: 19ddb2d517b2cf5b171766a79b3bd03759bbc17c32095e4d28f7a8c8bae8543c
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a single image and minimal text, typical of phishing attempts. It directs the user to click on a shortened URL, https://soldm.page.link/qXUY, which is a common technique to obscure the final destination. The heuristic 'PDF_IMAGE_LURE_SHORTENER_LINK' specifically flags this behavior.

Machine Learning

  • Nyx PDF Classifier clean score 0.0509

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 30 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://soldm.page.link/qXUY In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C92 7412 bytes
SHA-256: 38a3fdf6d09150bc698e7ccfd76d3aa29cf2753a3b24ebf55cad636aa9c55643
font_01_sfnt_off00006fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 2828 bytes
SHA-256: 18b7f5b19c0937289a672192218e7093aad6fbb16eb981021ccaab63acb9e7bb

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