Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0512215ac4371ae…

MALICIOUS

PDF

21.5 KB Created: 2021-06-05 09:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 731754b56816058a6529508cea013121 SHA-1: e334dabe04f1fea20147ade8d1db22b7fc91bd42 SHA-256: b0512215ac4371aeb8228d577903218dd07d94c85bd9df1a490bf879a1f14994
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as an image-only lure, a common tactic for phishing campaigns. It contains a link to a URL shortener, which is likely used to obscure the final malicious destination. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not meant for direct user interaction but rather to present a deceptive visual.

Machine Learning

  • Nyx PDF Classifier clean score 0.1252

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 21 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://gort.page.link/JT5D 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_off000042d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42D5 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

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