Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e342cd45d6a7fa0…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 19:02:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 85cce63d4eba1cff2fc19466eaddedc1 SHA-1: 3c1c7c80365d5dbeeaaf8ff5105cbf4ecad2b365 SHA-256: 9e342cd45d6a7fa038e7541acd492fa28f0f7d6006f8d44b342eded5814070f7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, masquerading as generators for popular games like Coin Master and Roblox. The primary lure, 'coin-master-spin-hack-without-verification-game-hack', points to a known malicious domain. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious redirector designed to lead users to potentially harmful content or further malware downloads.

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-spin-hack-without-verification-game-hack In PDF document text
    • http://meisterhaus-guterl.de/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/roblox-earn_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/hack-a-game_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/tower-of-hell-roblox-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_off00004b7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7A 24232 bytes
SHA-256: e0c7dae180d4b2c0484d49bc46671eb70a502e014ab5b30a17d3e7c134b8ae15
font_01_sfnt_off00008337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8337 18528 bytes
SHA-256: bf3f764869c6a31c5cda1c047c35a78fe470abce066a28f55ed89f494fef0fb5

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