Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3694e205c85d7b9…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 10:43:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f6fbcb64c2ad25a3fa7dc02e787c714d SHA-1: c01f1e74883ee3b30ef733fe9d47efc8d20dd5e0 SHA-256: a3694e205c85d7b93dd869d4d906cdb980389e24fec12baa087c1c1c3f8baf84
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 0.9865

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/431946152/script-executor-roblox-free-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/pubg-uc-rate-in-india_GM1330123889.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/cheat-engine-max-health-roblox_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
stream_004_off0000517f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x517F 24756 bytes
SHA-256: be945b0dc2aa480c4fda4821e341de94c168690b64ed9192d87dc059714c62d4
font_01_sfnt_off00008a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8A 18488 bytes
SHA-256: 44f354328229956739dd06097b6bba890ee37516a64f4c38c86d9692edd8e6a2

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