Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a8c8a02b9ab9e7…

MALICIOUS

PDF

44.9 KB Created: 2021-05-17 03:40:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47c2d10bceb544fdd7b5c4fa348a060b SHA-1: bcbf71b5610841a30143e63f06775ab45343439f SHA-256: b9a8c8a02b9ab9e7a0ad13a6214e33a1b536388c888a5865266cff36f07932e9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure appears to be a 'Coin Master Hack' which leads to the URL https://netcdn.xyz/app/406889139/coin-master-hack-ios-download-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to trick users into downloading potentially unwanted or malicious software. The document body also contains similar lure text and URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/coin-master-hack-ios-download-game-hack In PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/rbx-com_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A46 24664 bytes
SHA-256: e9f60a81d86a14aeb9f7f497095b17cb0766e2539d7f0a66d24cd5f81500101f
font_01_sfnt_off000082c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C5 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off00008cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB0 18296 bytes
SHA-256: abb5dc3882d33bb675e42633b9ef907b5fa8a8f8ffe877e273a1ba74b2e79714

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