Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f36698bc3b1f2d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 07:21:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ec6bb2fd15f1d75ea1e6ee89e65e3663 SHA-1: 5e1e427c9b70dfc478c9a28bcba0f1ad4b5f59ff SHA-256: 32f36698bc3b1f2de984a2303514c9e2ec337c37cc37b59a9f0594717fb4f6e6
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.tw/app/406889139/hack-coin-master-apk-mod-game-hack PDF link annotation
    • http://oca.undil.tl/repository/how-so-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-free-accessories-codes_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/pokemon-go-free-roam-hack_GM1094591345.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-1-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-create-a-free-admin-game-in-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/a-free-robux-code_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spins-app_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
stream_002_off0000300c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x300C 22968 bytes
SHA-256: e039bd096045682956db50fb290b8d71e67b176de9b62119ee5adfe27d4ea406
font_01_sfnt_off000063a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A9 18352 bytes
SHA-256: cbc4e4e1d1bb734107fc5d409ab149651d88467a261092654a59e8786ea3a6d0

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