Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc25d43741fd5c85…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 07:53:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c125f23590f10e2c3ae712ccfae9d4bd SHA-1: 2f31e519c57a666a249ae2e9aacd4ebc798abf53 SHA-256: bc25d43741fd5c859cfd41c411a107d96c93781e6f06be486f961f2186baf3d6
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/shinobi-life-roblox-hack-onyx-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/roblox-cheats-2021-dll_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-account-read-desc-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-jailbreak-cheats_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/can-you-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/viper-venom-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/como-instalar-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-change-your-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-admin-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-jailbreak-hack-cheat-engine_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_off00002f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F80 22672 bytes
SHA-256: b71815d48d76e4b319d364acf73f6fe8989f0880d09fec051626b74a8d315c03
font_01_sfnt_off0000625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 19120 bytes
SHA-256: 55b0e74edb97f41cd212656316834974ccf25042987a9ab6f65425babc8b9b47

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