Malicious PDF — malware analysis report

Static analysis result for SHA-256 e40eabd9abe23f0b…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 22:52:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cabc4c8331cbf190c0d48b672cd8c02e SHA-1: 69af92e934f6ced6d3f80fb870279885abffea8d SHA-256: e40eabd9abe23f0b0b19750eed789034be4425448a12a40f97cd36769d716f78
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/how-to-get-free-robux-no-waiting-or-inspect-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/free-robux-glitch-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-video-files-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-roblox-redeem-card_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-for-kids-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-safe-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-i-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-any-game_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/uncopylock-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-without-human-verification-or-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-robux-free-codes-android-s9_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-com-for-free-robux_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_off000030de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DE 22084 bytes
SHA-256: c2c1f2b0a8d13123978c9e541966a8226c3c9545f2974ea9bb61983822dcec4d
font_01_sfnt_off000061a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A8 19292 bytes
SHA-256: 57cde2b6fe3bc56218cd3bc22f4d8cd64770263c991ed2b9a568c3f0394d13dd

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