Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03972b95bcf4fa6…

MALICIOUS

PDF

30.2 KB Created: 2021-07-21 04:12:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 260e4e5aa5b9a8cb643ff25d73f30225 SHA-1: 96d088ff44fef1d64cea1ef64fb4062c243b408a SHA-256: d03972b95bcf4fa670d93fd516dd32ec101ffcb43f0f2cc8c5237907a77b6f69
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a Minecraft code generator. The heuristic firings indicate a lure for game hacks and malicious redirector infrastructure. The document body text and embedded links strongly suggest a phishing attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0556

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.tw/app/479516143/minecraft-java-edition-redeem-code-free-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2272 21892 bytes
SHA-256: 616305203886fe82dfea90389cbe96a04533f68f32241e28cb8eaa0e13c47e92
font_01_sfnt_off000052b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52B6 18824 bytes
SHA-256: 3e84327372ede1fb0dd75240746e2dc46639f78069d280fe972667d8e0b4261e

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