Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0cfdb7beecb6f3…

MALICIOUS

PDF

42.8 KB Created: 2021-05-17 01:45:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 003424c6d361c9a02e6c53048191c8a2 SHA-1: dd51af45311e5bfe4b37c42e39dbae3547c3600e SHA-256: 9c0cfdb7beecb6f3468a55e21168176a4a1ba8c68b79959a7f68bff9f24f27ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators' for popular games. The primary redirector URL is https://netcdn.xyz/app/406889139/coinmaster-spin-ml-free-game-hack, which is also present in the document body. This indicates a social engineering lure designed to trick users into visiting malicious sites, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coinmaster-spin-ml-free-game-hack In PDF document text
    • http://schmittmusik.de/images/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-booga-booga-hack_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
stream_003_off00004a1f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1F 26328 bytes
SHA-256: e64067bc3503e715795b48d1a8f2711c5d865e05a7a3b486c451c5eaf9b3f6a3
font_01_sfnt_off0000857a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857A 18220 bytes
SHA-256: 650e8f71a1b9292b8308c8990560b3515b162e3aa2d6bcbd8521e639c6c382b1

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