Malicious PDF — malware analysis report

Static analysis result for SHA-256 f523f6a942a89117…

MALICIOUS

PDF

41.8 KB Created: 2021-05-10 14:31:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2ab17b28b3d249d14a1aa4c3e5fadb76 SHA-1: 0f44f69b953fea90b2153170998ed3c59b449019 SHA-256: f523f6a942a89117757587f4e3418ed45ec618ace9528c78e10b715b708aeb05
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and generators, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of multiple game-related lures suggests a social engineering attempt to drive traffic to potentially malicious content. No scripts were extracted, but the document's structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-cheats-switch-game-hack PDF link annotation
    • http://digilib.uim.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_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_off00004b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B59 24240 bytes
SHA-256: 28f89d735b986addb4f29809ee37331d77a7fd6ff06f4aa4e73a82a2fd586272
font_01_sfnt_off00008286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8286 17896 bytes
SHA-256: 0fc04686b0373a30d4a255cfcec4508d7ed03b66db0ab497f509a50ecb5e1dbd

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