Malicious PDF — malware analysis report

Static analysis result for SHA-256 b93e731177e50954…

MALICIOUS

PDF

35.0 KB Created: 2021-05-26 10:38:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ea45d258d12413db747aa23f8c29acd0 SHA-1: 6c5b22ab3a8a9b2ab64e0348b74ff4686a8c3a83 SHA-256: b93e731177e509546d5ba34df5cee7926089ff540ddfd5697bbee65778e06db2
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as an image-only lure, designed to present a screenshot that hides a clickable action. This action directs the user to a URL shortener, which is a common tactic for phishing or malware distribution. The heuristic firings strongly indicate this malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0739

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 34 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://newselonm.page.link/C32Q In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAC 4596 bytes
SHA-256: df54468c4542d2809a768a696e6ddb23c82de4f0540a88a4f75b959c05134838

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