Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e7d8b4ced8360c…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 23:38:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cc64045a3e6ae3af01e6de937d150613 SHA-1: 6ccab8d9417f936a834a79b66ce5579b93073650 SHA-256: c5e7d8b4ced8360c613a7a208abd4b3928bf828f3a891db3b885af9d1166cf8e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that promise game hacks and free currency, such as 'how-to-be-a-builder-club-on-roblox-free-game-hack'. This lure is indicative of a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into visiting potentially harmful sites.

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/how-to-be-a-builder-club-on-roblox-free-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-spiel-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/fe-hacks-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/was-roblox-hacked-once_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-daily-free-spins-2021_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_off00002f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F22 22408 bytes
SHA-256: 660b57fa1cd25ae70f333abfd44363c90be5c07cd3d2b8573f66709d2a2bad86
font_01_sfnt_off000060d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D8 19248 bytes
SHA-256: de963d9b7496e6f001876211d861546e6fd500440f951eae6077e4c7b448960b

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