Malicious PDF — malware analysis report

Static analysis result for SHA-256 2160b4940e337069…

MALICIOUS

PDF

24.6 KB Created: 2020-10-02 08:23:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 062162e15c7518a28869295c35200619 SHA-1: 955ad86aeb1d47d41b45dbbd8f5a11323b7a1e4c SHA-256: 2160b4940e337069c936d88d924c3dfd129ad509478d0720c8550df208bb2099
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript and is presented as an image-only document, a common lure technique. The heuristic 'PDF_IMAGE_LURE' indicates it's designed to trick users into clicking an action. The embedded URL 'http://enotikmonika.greychin-b.ru/gaz/prom' is the likely destination for the malicious payload, as suggested by the 'PDF_URI' and 'EMBEDDED_URL' heuristics. The presence of embedded JavaScript further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.1050

Heuristics 4

  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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 24 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Image-only PDF lure with a single link to a non-reputable host medium PDF_IMAGE_LURE_NONREPUTABLE_LINK
    PDF is image-heavy with little real text and its only clickable action is a single external link to a host that is not known-good. This is the canonical malspam carrier shape — a screenshot-like 'click to view' page whose sole purpose is to funnel the victim to one redirect/landing URL on a compromised or throwaway domain. Flagged suspicious rather than malicious because the link alone (no shortener / typosquat / brand path) is the only corroborator beyond the image lure.
  • 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 http://enotikmonika.greychin-b.ru/gaz/prom 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_off0000459a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x459A 14480 bytes
SHA-256: 4673a2d20e30c41fd739521efd4445f5294554f3083e4fd9ccbeb67a328d811d

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