Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac87f47c64195ee9…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 17:40:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 30e5dddc8f0c89cff43beb0a677b62f7 SHA-1: 43450c6cbe253688701221457524669f2b0a813f SHA-256: ac87f47c64195ee90393d61f90e5ebf2f1caf44d2bcb4c3fd7b989f8c96e1365
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/get-free-spins-for-coin-master-game-hack PDF link annotation
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/free-robux-website-by-ads_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/ultimate-driving-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/nope-hack-roblox-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/free-robux-november-2021_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/roblox-hack-2021-free_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/free-and-easy-robux_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/antivirus-free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/how-to-create-your-own-scripts-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/uncopylock-free-robux-wait-for-24-hours-for-your-robux_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/free-roblox-promo-codes-gen_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/roblox-super-power-training-simulator-free-vip-ser_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/roblox-jailbreak-hacks-download-free_GM431946152.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/how-to-get-free-robux-youtube_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_off00003388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3388 22864 bytes
SHA-256: d88db1655c36c9b14b9ee937dffef2604c8783f361237d38a4852451d5399c9b
font_01_sfnt_off000066b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B5 18176 bytes
SHA-256: 76bfdde0d1dbaff2503b84320f04347c0e27e5afe98e240136eaf8f884d81ceb

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