Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d50c30734c862e6…

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 04:22:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3e1512fe08c6f691a2f290c92c97f870 SHA-1: cb963c7772918f280cd0da59601cf26bd487ba71 SHA-256: 2d50c30734c862e6e804ce6cca9334d7391d0ee66c45c9f0165c7f1a6307d01a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure for game-related cheats and hacks, specifically targeting 'Coin Master' and 'Roblox' players. It contains multiple embedded links that redirect to malicious infrastructure, which in turn serves further PDF lures. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-hack-2021-game-hack, which is part of a chain designed to lead users to potentially harmful content or downloads. The document's structure and embedded links strongly suggest a phishing or scam campaign.

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.tw/app/406889139/coin-master-hack-2021-game-hack In PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-free-muscles_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-please_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/moon-active-games_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/_GM479516143.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-no-verification-required_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_off00002f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8B 23048 bytes
SHA-256: 2d774873610f110ce2285b34c7da0922c014c87119508bb54e3d13de81686ea5
font_01_sfnt_off0000636d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636D 18408 bytes
SHA-256: 8438728008f6ab05b5c9a65d4eeb1f2e5c23a436eadc11c6e76328f72b7d7fb7

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