Malicious PDF — malware analysis report

Static analysis result for SHA-256 9663e2752f82f25a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 17:57:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ca2b5d3f39bb1ba1fb393a38496f383 SHA-1: 71634e2e1ebd7895939c75038b9c29c2a23f01e7 SHA-256: 9663e2752f82f25aafde3c29db4bf04598bf29713baa9e856bf0ecf66a1853a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and generators for popular games like Roblox and Coin Master. The primary lure appears to be a 'Roblox Plus Free Game Hack' leading to the URL http://netcdn.co/app/431946152/roblox-plus-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt designed to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/roblox-plus-free-game-hack In PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/www-robux-us_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/link-coin-master_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/robux-get-com_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/show-me-a-video-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/invisible-blue-hack-roblox_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/free-tix-roblox-2021_GM431946152.pdfIn 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_off0000320c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x320C 22344 bytes
SHA-256: 3f0a0fe41e202c470731c9065c834d46fb4092697403b23811597285d27fb0cf
font_01_sfnt_off0000641c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641C 18944 bytes
SHA-256: d6e2a4ee698258789368dca579286b64ce071858503ec81ea79b60450ae2170c

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