Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7d41cf13a804fd…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 14:24:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6852dc9a318d4dee6088334c19df6cf5 SHA-1: 94a751306a04bd8b00d92a26ad92a402bba937e5 SHA-256: 4d7d41cf13a804fd14626e14a392ff31da42464cccf1b0690263194703b7b8b4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link that redirects to a game hack website, which is a common lure for malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a potentially harmful site, likely for further payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-spin-game-hack PDF link annotation
    • http://elibrary.uinbanten.ac.id/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/minecraft-mojang-free_GM479516143.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
stream_004_off000050a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A3 25220 bytes
SHA-256: abb33eae59fa7906846b237b8fe10769bd95293927e55f3491d2e7363f1f1977
font_01_sfnt_off000089fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FB 17892 bytes
SHA-256: 340cad640208a3f63c565dece8f0e8a86db030e36dd2ab9bf46956c7901539b7

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