Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3c801083bee11c…

MALICIOUS

PDF

18.5 KB Created: 2021-06-05 09:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 1536c56f02f4dfb2b59edabbcf081e92 SHA-1: dc4678b0e8bcaa2e993b5a303e0ce69b5feb2773 SHA-256: 8f3c801083bee11c227b284e4c06c52a6e047aca48d644d6a47de080f5cef6d1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, a common tactic for phishing. It contains a single embedded URL that utilizes a URL shortener, indicating an attempt to obscure the final destination. The heuristics suggest this is a typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.

Machine Learning

  • Nyx PDF Classifier clean score 0.0577

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 18 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/1ywB In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F21 3152 bytes
SHA-256: 8b96cec4871f5d31685e1fb7a1a88081709b982310b4ed56b6382d31cde2c6cf