Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7b704747771622…

MALICIOUS

PDF

32.7 KB Created: 2021-07-06 16:38:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6d7e75e8545492dd766c9cd0e479eb7a SHA-1: 1b1ee1e30035afe6953505a770084534fd0029df SHA-256: 6b7b70474777162280214fc5dcde96dca1db06cbac1293686711c6eb8c842e8e
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 0.9824

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/free-roblox-hack-game-hack PDF link annotation
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-acc-in-roblox-kazok_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-youtube-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-linkmon99-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hectic-plays-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/op-rewards-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-free-admin-script-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/202100-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/fluxbreak-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/robux-for-roblox-free-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-promocode-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/equillex-how-to-get-free-robux-and-builders-club_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-draw-2-roblox-kick-people_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-what-to-do-if-you-get-hacked_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-2-000-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/live-roblox-bubble-gum-simulator-hack_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_off000029a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A3 22472 bytes
SHA-256: 30f806913e8fbe724f991250d86430d72a2d7a9a7adf40f32a0bef60223bc25f
font_01_sfnt_off00005bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC5 18820 bytes
SHA-256: cf67562a6930539490549aeb8f0b318a0b45b3e5cb7414ef3283f960707338b6

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