Malicious PDF — malware analysis report

Static analysis result for SHA-256 743b6d6bf4babf73…

MALICIOUS

PDF

36.8 KB Created: 2021-06-20 01:08:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c912c40905841c7bafe635f5c5e2c98d SHA-1: 12dc788c468947e9f3a0c313f424faa763f41279 SHA-256: 743b6d6bf4babf739cc0afe0e1dfd48b0851c5ef83932437cdb8a8c4678ab7ea
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/how-to-use-cheat-engine-on-roblox-2021-game-hack PDF link annotation
    • http://educhina.mn/editor/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-hack-levels-in-roblox-project-pokemon_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-game-botter-free_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/vdeos-de-los-mejores-hackers-que-hackean-cuentas-en-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-unlimited-robux-on-roblox-2021-october_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-shirts-images_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_off000035a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A1 23168 bytes
SHA-256: f5ba8e4a7e028ba9b85726ab56d91241f070230fdc32c8118f6cee90b4f640e2
font_01_sfnt_off000069b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B3 19444 bytes
SHA-256: f249b2fd61c077a483655254b40270fada98a1dac6a68d1d136664be6c5be735

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