Malicious PDF — malware analysis report

Static analysis result for SHA-256 4111b0c990201ea1…

MALICIOUS

PDF

41.7 KB Created: 2021-05-19 03:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 534cd3a7c3add94b6aefd24ab894f47a SHA-1: dd3449f3ea09b9f24151802cde633045833078b5 SHA-256: 4111b0c990201ea15e28f60628055a29b4e0bcf86c62daa059a7f8e6fb308b16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "free generators" to lure users. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-spins-for-free-game-hack. The document body and embedded URLs reinforce this lure, aiming to trick users into navigating to potentially harmful content.

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/coin-master-spins-for-free-game-hack In PDF document text
    • http://nod74.ru/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://nod74.ru/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/robux-game-com_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://nod74.ru/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/login-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/robux-no-survey_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_off000048fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48FB 24952 bytes
SHA-256: 43d801770fd526bda7d5091d15519312224a4c1d94c3286c031164fa9356d75b
font_01_sfnt_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 17884 bytes
SHA-256: f64f8d8cd546afe107dcd88d9ce91258665e3d619825ef5ba403a2abc0c27184

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