Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca5944b621509bf…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 01:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8166c294276f79d86f559c00ddbc9ad7 SHA-1: 9063f1b537d2d24bffaac3d800e33b6419578e42 SHA-256: 9ca5944b621509bfd79c50d13e08f6e27f1a3d67f5b7060b8bf29e0c0dcffbf4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-robux-hack-inspect-element-2021-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/pubg-uc-100k_GM1330123889.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/tiktok-views-free_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-human-verification-2021-or-survey-no-download_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-items-roblox-2021-list_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/syntetisia-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/dolphin-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-lumber-tycoon-2-cheater-box_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/discord-server-hoe-to-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-xray-hack_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
font_00_sfnt_off00002f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F97 21940 bytes
SHA-256: a0427ea6722c41e03f11c1719ba8c3b1d8bb1ecb4f885361484bbc6b5d589ca8
font_01_sfnt_off00005fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDE 19552 bytes
SHA-256: ada900cee42be1b07d977677c534d38c9721dcba1269dca22c9bae784a1b8fc8

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