Malicious PDF — malware analysis report

Static analysis result for SHA-256 671d024447216b9b…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 07:30:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 08d831469000a807c9f8d5284952e402 SHA-1: 24d4e23b68f1eba505fe1e7458044874db531f3c SHA-256: 671d024447216b9b0c42daed37a085a45bbcb6b8c829f860d100a15108e78956
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Roblox Free Exploits 2021' and includes a high-risk heuristic firing for a game hack redirector. The primary URL, http://netcdn.co/app/431946152/roblox-free-exploits-2021-game-hack, is embedded and presented as a call to action. While no scripts were explicitly extracted, the nature of the lure and the embedded URL suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

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-free-exploits-2021-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-para-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-free-real_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-is-it-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-hack-that-works_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-hack-2021-lenovo_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-doing-nothing_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/secrcet-free-roblox-hats_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/aimbot-hack-roblox-cbro_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_off00002ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC2 22720 bytes
SHA-256: b5163053a1b7b3fb01acd6de9bfec384a4ae30ee718962159c9bdfc6596adb96
font_01_sfnt_off00006181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6181 19452 bytes
SHA-256: 1a61dd855ca06478916110a030382befe4d9162c659c20939ffad86da97ed393

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