Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc2eb204ed56342…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 01:00:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e9637ca39033f4518195de9494639509 SHA-1: c2d96ac7a56e3c8de7622df9c75edde3d7a490d9 SHA-256: adc2eb204ed563428f74305675003bd6f4fc08c22287a7d9bafa8e2f6cad1c8a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a document body that explicitly advertises 'Free Robux Generator No Human Verification' and related game hacks. Heuristics confirm these links point to redirectors and lures for game hacks. The primary URL, http://netcdn.co/app/431946152/free-robux-generator-no-human-verification-game-hack, is likely the initial stage of a download or phishing campaign. No scripts were extracted, but the document's structure and content strongly suggest it's a malicious lure designed to lead users to potentially harmful websites.

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/free-robux-generator-no-human-verification-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-how-to-get-in-bloxburg-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/bloxburg-free-play-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/cheat-undetectetble-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-games-only_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/dev-web-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-cheat_GM406889139.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_off00002f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F74 22520 bytes
SHA-256: 75cf26a3b409d14781dbee2785142dbb73aa4ecb678be8ae94e7d31670e508a0
font_01_sfnt_off000061c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 19336 bytes
SHA-256: 1e7a5ee1c2d4ea33325644fd63b1f7e257f54daacec13fb4b037f0c912b7aa4c

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