Malicious PDF — malware analysis report

Static analysis result for SHA-256 9829628b93bbb8b4…

MALICIOUS

PDF

30.6 KB Created: 2021-05-28 10:45:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: e187b8b9fde8c35738f32e9181976159 SHA-1: 9ac81a63df67aa76b4c96e164060d6ed2bc5c28e SHA-256: 9829628b93bbb8b4b554bacb3460f57aed070a09c84449027a79e9779f8dbd02
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is an image-only lure, a common tactic for phishing or malware delivery. It contains a clickable link disguised as part of the image, which directs to a URL shortener. The heuristic 'PDF_IMAGE_LURE_SHORTENER_LINK' specifically flags this behavior. While the linked URL itself was marked as benign, the overall pattern suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.1203

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://bezplat.page.link/y2bd 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_off00005c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C64 15748 bytes
SHA-256: b754b293910fc481f1045a7ad13cd835d83c618ec2c6b389a03e38b79f803901

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