Malicious PDF — malware analysis report

Static analysis result for SHA-256 8706c24fbe97b06f…

MALICIOUS

PDF

36.5 KB Created: 2021-07-05 21:18:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5290171882814e6e7774b75797a74cc9 SHA-1: 53ea9cd623470f6ea0705043950c13f30790b41a SHA-256: 8706c24fbe97b06fc9f3aa17de02ec7b0b552ee6d403c82d2511af95ece069e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The embedded URLs, including http://netcdn.tw/app/406889139/do-coin-master-hacks-work-game-hack, strongly suggest the document's purpose is to redirect users to potentially malicious sites offering cheats or generators. While no scripts were extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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/406889139/do-coin-master-hacks-work-game-hack PDF link annotation
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-free-robux-on-apple-ipad-2021_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/robloxcom-free-skin_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/roblox-btools-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/velvet-twitter-feel-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-robux-commercials_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-hacks-on-strucid-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/obc-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/hack-de-robux-100-real-2021_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/fre-chain-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-free-money-on-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/roblox-noclip-download-hack_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/block-hunt-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/bypass-roblox-cheat-engine-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_off00003815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3815 22940 bytes
SHA-256: de51e30c8e6cc95582419fa386804af0a6d6f8e7443af5665169975bc92432a4
font_01_sfnt_off00006bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB3 18368 bytes
SHA-256: 90ad0cf12c2a6916d2c592b01db25014e61bd9465bbe9f6561250b63871a9567

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