Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b8d6f7d397f990…

MALICIOUS

PDF

27.7 KB Created: 2021-05-10 18:31:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e697d4e879f6020b300395bd87110935 SHA-1: 2dfb2bae8a1b487934a62b54ab4049a96d80a643 SHA-256: f2b8d6f7d397f99093f21f0c087f8fdbba8dba5a6d066d45e44f0f885b8ddbda
82 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious URL, masquerading as a game hack generator. The ML classifier and specific heuristics strongly indicate malicious intent, likely to deliver a second-stage payload or phish for credentials. No scripts were extracted, but the document structure and embedded URLs suggest a social engineering tactic to trick users into downloading or executing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9759

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 https://netcdn.xyz/app/431946152/microsoft-roblox-game-hack PDF link annotation
    • http://www.digilib.uim.ac.id/repository/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-on-phone_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_off000020d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20D7 19412 bytes
SHA-256: 137a7d6979b0734a68f7134ffe57edac1fba6784158854946c9e45f444ecaeca
font_01_sfnt_off0000497c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x497C 18204 bytes
SHA-256: 2b7eeff572d04ab457d9e2a35520a79c61ee30861b9713b02bf411d46f2ac039

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