Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc9c171724f486a7…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 17:48:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 49dec75b38cdd30c903a6386a1c8dd8a SHA-1: 2716b24800154e23aa13233f7643427c0edcdb5c SHA-256: fc9c171724f486a76b9e69f527a2618a49fc5dac646fe8a245c3bc4da55f8e8b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary redirector identified as http://netcdn.tw/app/431946152/hacks-roblox-game-hack. This URL, along with others, is presented under the guise of game hacks and generators, indicating a social engineering lure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to potentially harmful content.

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/hacks-roblox-game-hack PDF link annotation
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-pizza-cheat-engine-script_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/robux-hacks-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-btools-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-roblox-bc-cards_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/100-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/freerobuxcodegenerator-roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/how-to-hack-roblox-flood-escape-2_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/jailbreak-roblox-safes-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/soporte-para-reportar-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/bux-gg-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-robux-youtube-channel_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/robux-game-com_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/hello-neighbor-free-play-in-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
font_00_sfnt_off000031b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B2 23072 bytes
SHA-256: 5b8b47f103391bfb3fbaf008c90663f8afc7fd0a1dd3383980e8d02ff3402db1
font_01_sfnt_off00006588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6588 18656 bytes
SHA-256: 07359c60a6ef94fa5b03a0cb2f18a240aa89d678f31d64c89b09ee8dd6172433

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