Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e64bd2549a887bc…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 16:52:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3ca128942fe0d5fb42c185315d06cccb SHA-1: cd17b02645903864265039b71ede3fc82530d36e SHA-256: 7e64bd2549a887bcce85b2268e6569458bc9dd5fd49844efbb89791600f1e622
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.co/app/431946152/cheats-roblox-bloxburg-game-hack PDF link annotation
    • http://fccsms.com/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/fiverr-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://fccsms.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fccsms.com/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/how-t-oget-ant-free-robux_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/gift-robux-com-free_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/how-to-have-free-robux_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/how-to-use-inspect-elements-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/how-to-get-free-hair-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/how-to-get-free-robux-2021_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_off00003010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3010 22240 bytes
SHA-256: 0e844a38d604dfd4c1b762c2c4b3731d22f6dab58bf37932a43b042b4f19878e
font_01_sfnt_off0000616c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616C 18896 bytes
SHA-256: 641a5a8c4405cc5a8b891c6b82a2c9e2d902c4773e8f81fdc1dd098c21874451

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