Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da01400a9697976…

MALICIOUS

PDF

29.8 KB Created: 2021-08-09 20:32:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d2b4dd70af02ae3df7f3a46a728a7d1e SHA-1: 8325f0705fcb813749df887d1239ff82e414056c SHA-256: 2da01400a96979762698f6f0f99b7804d9467672f9c0018dd9c34f95add65f32
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, typical of phishing documents. It includes a URL shortener link, which is a common technique to obscure malicious destinations. Although the URL shortener itself was flagged as benign, the overall structure and heuristic firings strongly suggest a malicious intent, likely to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0831

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 29 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://megerono.page.link/RU3j 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_off000063de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DE 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

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