Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1826c084e90f33…

MALICIOUS

PDF

36.2 KB Created: 2021-05-11 02:06:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4f289d0ce5f384eeb9f946c6498c0b01 SHA-1: b1f5b01f551e00f8bfc1a65c2971b1dee505e8b8 SHA-256: eb1826c084e90f33fd93899aead528054ee33a97aa1d24679166673843115c1b
130 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a 'free generator / game hack' lure. The document body and metadata indicate it was generated by wkhtmltopdf, suggesting it might be a crafted lure rather than a typical exploit document. The primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0283

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 https://netcdn.xyz/app/479516143/minecraft-games-free-to-play-online-game-hack In PDF document text
    • https://education.minecraftIn 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_off00003514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3514 24868 bytes
SHA-256: 6e2d75406bb53d4f6b89d8f18442624f9348b0e696367e8c8e4f99724cca88b0
font_01_sfnt_off00006c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 18380 bytes
SHA-256: 979afcbcb5a2898064d94605cabe85d956bbe97e457aaa925e4cb72988a417e9

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