Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e12bc5f4f82eb94…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 14:25:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 37ecfb40512fdc2d3beb5831585bed14 SHA-1: 27dfd14739429c085cedeab6b1238ff7ade07747 SHA-256: 9e12bc5f4f82eb948d72970e3069a43064c7d1b88b05baedc3d93a418b0da6f7
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/hack-robux-roblox-cheat-engine-game-hack PDF link annotation
    • http://kfz-service-etp.de/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/click-the-button-for-free-robux_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-carde-roblox-gift_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/is-it-still-possible-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/roblox-generator-no-human-verification_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_off0000318c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318C 22500 bytes
SHA-256: 15a98d05576f4bed9c70f298c8934092786182ea6738eabdbdd690beb8ab941e
font_01_sfnt_off000063b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B1 19000 bytes
SHA-256: 676ad0ea58b10ea2f4f65d36caa0f231d648b68ea9a0e7ba2b3ca0ec8fa220f5

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