Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff48ef238a65c60…

MALICIOUS

PDF

36.0 KB Created: 2021-07-01 14:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 105b7a123a37ccbb25d20db2949fcf4f SHA-1: f3cf6d20b8f3ee1814841a5c1be16209a4093e05 SHA-256: 8ff48ef238a65c60f7f712cd96e93d3b4d911a73f5ccc79cfc1e1e9c2f93c915
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links, including one prominently displayed at http://netcdn.co/app/431946152/roblox-hack-no-human-verification-no-survey-no-download-game-hack, which is presented as a lure for game hacks. This heuristic, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users to potentially harmful content. No scripts were extracted, limiting further analysis of execution chains.

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/roblox-hack-no-human-verification-no-survey-no-download-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/roblox-vehicle-simulator-xp-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/all-client-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hacking-into-jd-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cheat-pet-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-games-ios_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-can-you-get-free-robux-on-laptop-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-hacks-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-hack-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-apk_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_off000031eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EB 22464 bytes
SHA-256: a50af14c1e17ded766e19b2ff486abfac55a72f6a3ed01612fe6e4805a15f963
font_01_sfnt_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 20216 bytes
SHA-256: 9446a93a635e27b7703e743c324476c846104565548daf71958a7fb097ebf6f9

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