Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b8c01b36c43d72…

MALICIOUS

PDF

113.4 KB Created: 2021-05-28 18:51:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 1d72ccbbef18b3a40699664a05a2f90a SHA-1: 75addaec84809274b011be7147645bf8ca31a813 SHA-256: 06b8c01b36c43d72f814b3387f9673f8ccbddc9609ff3cc01e309f8b7fa7ca35
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-based lure, containing only one image and minimal text, designed to trick users into clicking an action. The primary heuristic indicates that the embedded URL, 'https://yesledy.page.link/4Yif', is a URL shortener, commonly used to obscure malicious destinations. While the URL itself is marked as benign, the pattern strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1382

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 113 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://yesledy.page.link/4Yif 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_off0001b26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B26D 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

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