Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2058ad0707c2ec5…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 03:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: be682b0be949f44b01021430b6a44330 SHA-1: 2d3e7c9a442f7e8a09636820ac00d8c9b407564f SHA-256: b2058ad0707c2ec53682fe3c6df940c7539daba900e96d3c83b8d1fa9bec7837
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-roblox-executor-no-key-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/red-boy-hack-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-hack-atravesar-paredes_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-app-for-android_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-generator-tool-download_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-a-halo-in-roblox-royale-high-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/web-robux-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-grouup-bots_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-glitch-obby_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
font_00_sfnt_off00002f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F68 21928 bytes
SHA-256: b11f3a9d0eb68c68da312b6a2fc8b234c2869ea518b952ebfc54a74b9920846d
font_01_sfnt_off00005fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDF 19072 bytes
SHA-256: a3655b6835e0c341634604fe14b5aa8dd34c828a46700e4c83960d8902ba3df5

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