Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0ceafd9550bfb2…

MALICIOUS

PDF

23.9 KB Created: 2020-10-02 08:51:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 046228756fc245ddd8934026bdac5a2a SHA-1: 72aaf95a06ebbf7b51edf0b0944484e255ee1ff6 SHA-256: 0a0ceafd9550bfb284539664b26383f9ea76bf6c247f82a15a4eb950bba9ff43
62 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and an external URI pointing to 'http://enotikmonika.premmise.ru/gaz/prom'. The PDF_IMAGE_LURE heuristic indicates the document is likely a screenshot designed to hide a clickable action, which is consistent with phishing or malware delivery. The embedded JavaScript, though not fully detailed, suggests an attempt to execute malicious code.

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 23 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.premmise.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_off00004569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4569 13752 bytes
SHA-256: d15baf5377ea17455899940f7c2736c48273efc34afc7a43afc68d1c4c4bb391

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