Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc6f6eff3585611…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 13:08:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 05d43781308edc70671cb222a29a8070 SHA-1: c64bf474def5678bfd8535350396ed657583e20d SHA-256: fbc6f6eff35856114cf821337edfbb019d014bf72ef8927b08a90184088587fe
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/406889139/hack-coin-master-without-human-verification-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-robux-hack-134_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hack-for-roblox-jailbreak-downloads_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-fidget-spinner-free-games_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-trade-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-one-piece-final-chapter-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-bone-break-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-phantom-forces-hacks_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/teleport-roblox-jilbreak-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-pass-hacker_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-quiz-diva_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-hack-tool-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-continue-as-a-guest-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-2021-easy_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_off000031ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AB 23128 bytes
SHA-256: 6708ebc39bc2a7dec1c6aea3972daa58b97e062eaa0c9509dc28d1d5e597cf47
font_01_sfnt_off000065e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E8 18904 bytes
SHA-256: 082fc6b2b71f7ea5548029beb597447fa73794cbf09ea5a46efd6265d0e30084

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