Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6252d6c5fa5695…

MALICIOUS

PDF

48.6 KB Created: 2021-05-12 02:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 75ec5f2c58395642ea4c8c395f0d9f81 SHA-1: ba06fd1ce9b4c972805211b53623c3efb437bb06 SHA-256: 7e6252d6c5fa5695106b8feebc08f1a11780814105aca0422deabfc9e8ba56ea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high-severity heuristic firing for linking to a 'free generator / game hack' lure, directing users to the URL https://netcdn.xyz/app/431946152/javascript-free-robux-game-hack. The document body, though heavily obfuscated, also contains references to game hacks and URLs. This suggests the document's primary purpose is to trick users into visiting malicious websites, likely for credential harvesting or to download further malware. No scripts were extracted, but the presence of embedded URLs and the lure itself strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/javascript-free-robux-game-hack PDF link annotation
    • https://tokunfome.com.br/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-cp_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/instant-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-person_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47A5 32348 bytes
SHA-256: 16ced6cfb65fae7d83ec7e05d432e1c294359cad85b7ed8588fd65dc536ea3d3
font_01_sfnt_off00008fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC1 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00009982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9982 18920 bytes
SHA-256: 37df68cbe6d620a6a908579d98e7a1ce8a765682fff888c408a64c9cb805dd83

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