Malicious PDF — malware analysis report

Static analysis result for SHA-256 412e7a2d3119c7a2…

MALICIOUS

PDF

47.0 KB Created: 2021-06-11 01:09:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bd9f404185db3c842eca81a01b75cfb6 SHA-1: 372c38406d0454fea85d0a630f158d96f2e04f07 SHA-256: 412e7a2d3119c7a208412f55f53abf449ab1f3f6029174bc37e7a317d4d6b30c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified as a PDF link farm, pointing to various SEO-optimized pages related to games and hacks. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the structure and numerous links suggest a malicious intent to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/431946152/free-gfx-render-roblox-game-hack
    • http://doganov.be/images/free-coins-for-coin-master_GM406889139.pdf
    • http://doganov.be/images/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://doganov.be/images/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • http://doganov.be/images/hack-robux-pastebin_GM431946152.pdf
    • http://doganov.be/images/free-tiktok-coins_GM835599320.pdf
    • http://doganov.be/images/minecraft-bedrock-free-download_GM479516143.pdf
    • http://doganov.be/images/free-robux-generator-no-verification_GM431946152.pdf
    • http://doganov.be/images/free-robux-without-doing-anything_GM431946152.pdf
    • http://doganov.be/images/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • http://doganov.be/images/master-coin-free-link_GM406889139.pdf
    • http://doganov.be/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdf
    • http://doganov.be/images/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://doganov.be/images/minecraft-windows-10-edition-free_GM479516143.pdf
    • http://doganov.be/images/minecraft-education-free_GM479516143.pdf
    • http://doganov.be/images/how-to-get-free-robux-no-inspect-element-no-wait_GM431946152.pdf
    • http://doganov.be/images/how-to-get-tiktok-famous-free_GM835599320.pdf
    • http://doganov.be/images/roblox-free-robux-bots-are-back_GM431946152.pdf
    • http://doganov.be/images/coin-master-free-spins-2021-generator_GM406889139.pdf
    • http://doganov.be/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdf
    • http://doganov.be/images/113-hacked-client_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005293.bin
4caf9e5dc574876c160d9a2d47493603ab82e1bb273f10eb5ba307b396e97cc4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5293 29540 bytes
font_01_sfnt_off000095ca.bin
e99119d18c63a2a49bd72a7b8f14dd3722a98b63cad8d11bb00f7c3346cd0bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95CA 18124 bytes

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