Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c69626833c4319d…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 23:15:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 458dd96824eb3160a0607c085a7a5164 SHA-1: 4e34474d9d1bc29cac1d0264ecfa28d8e9e1d40a SHA-256: 4c69626833c4319d58df63424f0a0162ce83cabe75968aee307bc547b263384f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely to redirect users to a malicious site that may host further exploits or malware.

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/free-robux-scams-game-hack PDF link annotation
    • https://library.iuli.ac.id/repository/download-roblox-on-computer-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hack-level-zombie-rush-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hack-cruise-ship-tycoon-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-roblox-tutorial-for-9-year-olds_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/youtube-roblox-jailbreak-hacks-no-virus_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-gamepasses-for-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/download-roblox-free-ps4_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-booga-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/speed-run-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-now-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/descargar-roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-group-payouts_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_off00002e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3B 21840 bytes
SHA-256: 2c2b93b4f556a931daf142dd259b99d2acad49d56d1d201493be863971d7a316
font_01_sfnt_off00005e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E70 18976 bytes
SHA-256: 48eef6298bef607355aca425a8072928fe0e0a0bc0ee660e64f251d9c93ff6b2

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