Malicious PDF — malware analysis report

Static analysis result for SHA-256 3233c50c12c6430e…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 12:04:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2234be62f2bd90cf5d88071d4c3287e3 SHA-1: c6874c77f511860be990fad140458b92c2b1ae05 SHA-256: 3233c50c12c6430ebf55cfa344b2bf1dec1b2a9608ff91cd4ff20182dd30b313
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-100-robux-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-free-robux-hack-without-human-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/outil-script-mad-city-roblox-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-bubble-gum-simulator-cheats_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-cloth-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-space-miners-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-hack-link_GM406889139.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_off00003001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3001 22164 bytes
SHA-256: bc096c5655a25d43c296fba1cb334f3b1c91902ec7124df75923887228038fc8
font_01_sfnt_off00006105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6105 18996 bytes
SHA-256: 50307759301c9532eb20b67e87d9cc20f2fa9f514687c8f0dcdabe953bf72270

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