Malicious PDF — malware analysis report

Static analysis result for SHA-256 9588e883e4ff749b…

MALICIOUS

PDF

48.2 KB Created: 2021-05-13 09:36:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d350e9e0e97c9654543c52abd081f70a SHA-1: 07ee6141bb7c7dfab4d02bfeb6646a9cf3b3c1cb SHA-256: 9588e883e4ff749b6fa34a0269cc9fa3995373dbf1ee44c65da47103a6772fc2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for a game hack lure, indicating a phishing attempt. The document body and extracted URLs suggest the lure is related to obtaining free spins or hacks for games like Coin Master and Roblox. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/moonactive-coin-master-free-spins-link-game-hack PDF link annotation
    • http://unifieo.br/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/roblox-girl_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-hack-2021_GM431946152.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_off00004b9a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9A 26160 bytes
SHA-256: bd96a289a6aaf60428f4e792d0202027a449d6eeeda19ca855d482ecdea30544
font_01_sfnt_off000085e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E8 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A73 18168 bytes
SHA-256: 5140a57a6990af64b86c6fc328de463115c3f290c56e1373822c3feaa5dc4a97

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