Malicious PDF — malware analysis report

Static analysis result for SHA-256 30808531f4518e4d…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 09:37:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 826993081cc23e01dc0b85cee7c7e2fe SHA-1: 568f9b82775fab1073deba5f116b110451a3edce SHA-256: 30808531f4518e4d9e46b341f3496470d929b27db7fd15021b8d5305e47a4298
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a "free generator / game hack" and displays a fake CAPTCHA to trick the user into clicking a link. This link, 'https://netcdn.online/app/406889139/google-coin-master-free-spins-game-hack', likely leads to a malicious site or download. The document's structure and embedded URLs suggest it is designed to exploit user interest in game cheats to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/406889139/google-coin-master-free-spins-game-hack PDF link annotation
    • http://perpus.wdh.ac.id//repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/roblox-hack-tool_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_004_off000052b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B6 24984 bytes
SHA-256: 21ce9ee65ff44bad158c69505bef1dd1f05305a46c9cf01be40355eb109bfd74
font_01_sfnt_off00008b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B47 18248 bytes
SHA-256: d32188c22f9df4e49535359cc17236f14c93b7b5c7ebedc8928f30f104243849

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