Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ebd2bbfcb1c410b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-20 12:11:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 02aeff512ef82408d19ccb9a6c20172b SHA-1: c92b2da29992b05ed353372e24fd36bb6332f7d1 SHA-256: 3ebd2bbfcb1c410b2e3fced3648e61db956a7c1eef75fddddb77fba61dda1d5d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.co', which is flagged as a lure for game hacks. The document body and heuristics indicate a social engineering tactic to trick users into downloading potentially malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of 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.co/app/431946152/roblox-booga-booga-hack-download-free-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-azure-mines-hack_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-jailbreak-cheats-noclip-teleportautorobautomoney_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-do-you-hack-peoples-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-easy-2021-july_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-hacks-easy-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master_GM406889139.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_off00002f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F87 22556 bytes
SHA-256: 793a97df07b2675fc68123275dcc2e6fe08bd7625d02c13e8cbeee48ae2ba2c1
font_01_sfnt_off000061cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CD 19328 bytes
SHA-256: 81dbdae7c4c6464126e06609422a16484b31f662b680dfe16f73d8cfba393d88

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