Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3410fd5e854754…

MALICIOUS

PDF

35.8 KB Created: 2021-07-05 18:10:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0c9aa290160d377ea453a1b27ae5bca6 SHA-1: af8234fe71b1a8f8b1f0683e615e51e7a2dcc6f0 SHA-256: ce3410fd5e85475405ccecfca791d43199bc814afb5a7588a760f5fadf1129ae
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with a primary focus on 'game hacks' and 'free currency' for popular games like Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this as a lure to a redirector. The primary malicious URL identified is http://netcdn.tw/app/431946152/roblox-counter-blox-roblox-offensive-hack-download-game-hack, which likely serves as a gateway to malware or a phishing page. No scripts were extracted, but the document's structure and embedded links strongly suggest a social engineering tactic to trick users into visiting malicious 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.tw/app/431946152/roblox-counter-blox-roblox-offensive-hack-download-game-hack PDF link annotation
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-free-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-please-join_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/swat-for-free-on-jail-break-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-codes-to-get-free-items_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-codes-28-seconds-long_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-without-any-verification-or-downloads-or-offers_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/pokemon-go-free-game_GM1094591345.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-leaked_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-aesthetic-clothes-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-hotel-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-manage-server-roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-hack-nonsense-diamond-download_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/flame-gg-free-robux_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_off000031e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E9 22800 bytes
SHA-256: b84b3dedc218f8b2c3265429359e8a8b4f0da56c917036c41c62692a52c6adec
font_01_sfnt_off0000650a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650A 19640 bytes
SHA-256: cadac72a17f05069dc65dd151746d5720d25fb4001d97613cf1cfc3414010427

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