Malicious PDF — malware analysis report

Static analysis result for SHA-256 343f138aff06efde…

MALICIOUS

PDF

42.2 KB Created: 2021-06-03 09:52:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 03cdaba278732d07dcade8c700cac79c SHA-1: 7a4f2e0b074543fe7f6d205adc2227feb3b91c16 SHA-256: 343f138aff06efde3c6d79a070be46f1f0bbc06322e8b2c8e079b86305ee6f72
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 0.9874

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.online/app/406889139/cheats-coin-master-free-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-hacks-no-verification_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_off00004c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C5E 24148 bytes
SHA-256: eb377367633bbfa3cae914de206fb24ddc25c55073329f7039063ff2e383f825
font_01_sfnt_off000083c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C2 17876 bytes
SHA-256: d474ea2552ad4ab61fecc332af7923c97f8bd7d49077a14e922627460bfe2888

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