Malicious PDF — malware analysis report

Static analysis result for SHA-256 70af5cc4367e19bd…

MALICIOUS

PDF

30.9 KB Created: 2021-07-19 15:05:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3833bff45eba825184cecf5181f82838 SHA-1: ac6dc4ef1f392e66973bd573a074ec9b75e22223 SHA-256: 70af5cc4367e19bd3750da2d558a1ed60967ad0a602932f64165a682d8c0b084
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious infrastructure, specifically advertising a 'free generator / game hack'. The document body and metadata also contain references to this lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious redirector intended to lead the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0457

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/how-to-get-free-minecraft-skins-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_off000024cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24CF 23236 bytes
SHA-256: f39c6a3e38d21c876a24c9ad1f2f387633299c3888170f6071be3fca5e3da824
font_01_sfnt_off0000581a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581A 18044 bytes
SHA-256: 2e9033515f3ff21116dec08c3b5b633a0403805954c28c410ec38fa0176f1df4

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