Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1f3617dc1ad4a05…

MALICIOUS

PDF

37.1 KB Created: 2021-05-28 16:27:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: dbadbe25824a76d872cde46f9dd9f10f SHA-1: 493a7df5058c040cdd252d207cb30c9a0a3ea17b SHA-256: c1f3617dc1ad4a053a08a1ad094f76e26c1a43e3271c20ffe0ff43417b03e8ed
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as an image-only lure, a common tactic for phishing or malware delivery. It contains a single embedded URL that redirects through a URL shortener, which is a high-priority indicator. The document's structure and heuristics suggest it's designed to trick the user into interacting with the link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0048

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 37 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://yesbaba.page.link/NcYR In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3C 6160 bytes
SHA-256: f306ab40e5c2cbf9403c5308c0d0c545b95e660c60269f8a73e71c82331ff05d

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