Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a82b10a86ecf2b…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 06:43:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3edaadfa27fe80ab7fb93caaba729286 SHA-1: aa744ccafc47df8467f5cba50a7abc3f0129bee8 SHA-256: 90a82b10a86ecf2b1a13de666e909a308908ef7ab8beca62635b0c55dd1bf33c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, https://netcdn.online/app/431946152/roblox-re-game-hack, likely serves as a redirector to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into visiting a potentially harmful external resource, aligning with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/roblox-re-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/xray-hack_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-account-roblox-with-robux_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
stream_004_off00005018.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5018 24696 bytes
SHA-256: 5a7ea53c36ebe520298545779728a61db8820b04e3fe103618432af7d190a7c9
font_01_sfnt_off0000890b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890B 17784 bytes
SHA-256: e51c91fae2f03f6f1e769b6466fc692d64b30edfed93825068737b7a11e94355

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