Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce06b8ffb3258375…

MALICIOUS

PDF

27.0 KB Created: 2021-07-10 02:00:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 72a18db6ca9cea7659e20d4d23583e07 SHA-1: f4f7cbd4bd2cd7dede72c5120974f42826a30fbb SHA-256: ce06b8ffb3258375de8d5cbcb22e924957eb9670867753fd53449d2ed7feb97f
130 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to a "free coins game hack" lure. The document body reinforces this by displaying similar text and a call-to-action button. The embedded URL is known to be malicious and likely leads to a further stage of infection or phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0329

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/406889139/free-coins-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_off00001987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1987 21744 bytes
SHA-256: 00b4d30e38149945d16da11b44a377fd77c77d6586bf84508c6999940a7e98bb
font_01_sfnt_off0000497f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x497F 17896 bytes
SHA-256: 0092693fe9410603e29c0e2f55c14e27706f2e935d91f42de3f5e85d1b266ce9

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