Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a10971d53165c17…

MALICIOUS

PDF

32.6 KB Created: 2021-07-19 09:30:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 52f6c76b4e6569ad7f2d95fe6dbecaca SHA-1: 2b485ce317e697c8c90cba8d6ffe4c28117e28d0 SHA-256: 0a10971d53165c178a334fc1de86c08a4e98d1b390973dac4c02714fa91e9cf8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free currency generators. The document body and heuristics indicate a lure for free Robux and game cheats, directing users to a known malicious redirector. The presence of multiple linked PDFs suggests a chain of lures designed to lead the user to a final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/431946152/roblox-free-robux-codes-game-hack In PDF document text
    • http://nep-operationalmanual.com/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/free-tiktok-coins_GM835599320.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_off00002b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6D 22228 bytes
SHA-256: 201ab8a506d24d024120bb1258873400372dd9d8b3db4f9ea7f3204ba75bf322
font_01_sfnt_off00005cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAB 18448 bytes
SHA-256: e529cb40a530da961a087a0762f87fb9b1aac153c26bd7c52945be752f3c1fb1

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