Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6caea334dc5281…

MALICIOUS

PDF

34.5 KB Created: 2021-07-08 01:35:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fe873397f605ec037e12919cd7f5d16d SHA-1: defd1661a1d8423acea313011a137419abcc86e3 SHA-256: 9e6caea334dc5281a51f5d3cb612f566f8c8bc45f5e1a3edef649a058972c4d9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a 'free Robux' lure, strongly suggesting a phishing or scam attempt. The primary link, http://netcdn.tw/app/431946152/free-free-robux-game-hack, is likely a redirector to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent.

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.tw/app/431946152/free-free-robux-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-free-no-vertifacation_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-download-a-hack-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-hack-inspeccionar_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-godzilla-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/xbox-one-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-retail-tycoon-hack-money_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-get-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/best-hack-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-hack-tool-2021_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_off00002f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F53 22908 bytes
SHA-256: fa094db2a7f8dbcf3914c3d19e4347fe43d6fcb5daa2d74e048565fc5abdfe4c
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 18716 bytes
SHA-256: ae86725dd70d168e8b5a24377d7effb3bd88f81667aa3e091abc0f5759eb354b

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