Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2e521ddf8021f6…

MALICIOUS

PDF

30.6 KB Created: 2021-05-28 10:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: adbd1681634f4f0d26910dc12a0d4ac6 SHA-1: b988bc8d81a92bd043cd8fe1d8d3431c3602ca01 SHA-256: 9b2e521ddf8021f65e5fbf33db8c47737cd5d73fcb10af695e5f76fbd9ce33b2
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 campaigns. It contains a clickable action that redirects to a URL shortener, likely to obscure the final malicious destination. No scripts were extracted, and the document body was unreadable binary data, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.1455

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 30 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://znakudachi.page.link/AJB5 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_off00005c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C68 15776 bytes
SHA-256: 69255362af62ea912542a91f1ff081f8d5fa40d1fcb05ad321de4e86c9692255

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