Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1f46d6669d08f77…

MALICIOUS

PDF

35.9 KB Created: 2021-06-17 20:01:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 75b948a5d3e9b9952067a4e66f302c7c SHA-1: 22cff535fc2882b5475e4c6cc1cbf010582d34cd SHA-256: b1f46d6669d08f770e71555523d60ad798282fbe693d50d32a2a5d3fbe7b4cc9
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/shirt-roblox-2021-free-dowload-transparent-game-hack PDF link annotation
    • http://repository.poliven.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/jurrasic-world-free-roblox_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-hack-dead-winter-roblox_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/roblox-pokemon-go-hacks_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-get-free-robux-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-in-roblox-real_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/pokemon-go-free-or-james_GM1094591345.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-working_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_off0000315e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315E 22700 bytes
SHA-256: 230b8378b4c36138a0c7e7f127ce13a47ecfa655a297564b8e397317ca0324a5
font_01_sfnt_off00006438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6438 20124 bytes
SHA-256: 3df718a49b30071f1bae0646951a6f2fb6725f8a57f5c87b318ce6f36ac8bf7b

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