Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d6d60b4b86aa15…

MALICIOUS

PDF

31.6 KB Created: 2021-07-19 15:22:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3798aa68124b10f00516796912d4845d SHA-1: dab055900028bce4102e476b157ecb4c369d48cd SHA-256: e3d6d60b4b86aa15874ef2ddd2ff536fbab138696528bbcedfb2d369841514a7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/479516143/minecraft-iphone-free-game-hack PDF link annotation
    • https://www.prodex-holz.cz/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-spins-coin-master-app_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_off00002b64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B64 21584 bytes
SHA-256: d80ee181fb5acfc16ccb8c801bd8ce041ef5d72bab442fd25d6ed9643a14df45
font_01_sfnt_off00005a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A76 18052 bytes
SHA-256: d64526d0e07d457868d5eac688c0bc3e5c9817b8b07646f1be3e20c76e1ff486

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