Malicious PDF — malware analysis report

Static analysis result for SHA-256 d12c95a3f61cefb4…

MALICIOUS

PDF

42.7 KB Created: 2021-05-16 08:35:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f0478a84b807424b317f56ff877243a1 SHA-1: e22dda9a9f6543c47df9a3b7a77ff87e0672326b SHA-256: d12c95a3f61cefb4a74714804d16b2212369d9437afde07787de8dfe3d845b22
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lead to external sites, many of which are structured as link farms for game-related cheats and hacks. The ML classifier and PDF heuristics strongly indicate malicious intent, likely to trick users into downloading malware disguised as game utilities. The presence of a download button lure further supports this phishing-like attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/minecraft-1.14-4-download-game-hack
    • http://caraless.com/images/free-spins-coin-master-without-survey_GM406889139.pdf
    • http://caraless.com/images/free-minecraft-mods_GM479516143.pdf
    • http://caraless.com/images/coin-master-real-free-spins_GM406889139.pdf
    • http://caraless.com/images/games-that-give-you-free-robux_GM431946152.pdf
    • http://caraless.com/images/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://caraless.com/images/how-to-get-free-spins-for-coin-master_GM406889139.pdf
    • http://caraless.com/images/coin-master-hack-spins_GM406889139.pdf
    • http://caraless.com/images/claim-robux_GM431946152.pdf
    • http://caraless.com/images/free-robux-hacker-us_GM431946152.pdf
    • http://caraless.com/images/free-spins-for-coin-master_GM406889139.pdf
    • http://caraless.com/images/minecraft-hack-mod_GM479516143.pdf
    • http://caraless.com/images/free-coin-master-cards-link_GM406889139.pdf
    • http://caraless.com/images/coin-master-hack-apk-ios_GM406889139.pdf
    • http://caraless.com/images/minecraft-cracked-client_GM479516143.pdf
    • http://caraless.com/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdf
    • http://caraless.com/images/coin-master-free-coin-hack_GM406889139.pdf
    • http://caraless.com/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://caraless.com/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • http://caraless.com/images/actual-free-robux_GM431946152.pdf
    • http://caraless.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://sigmaclient.info#2
    • https://flux.today#3
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bf8.bin
fb7b24b4824ad5da11a4b51f0d9f31a28262ad916368141004f81ece46af8c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF8 24792 bytes
font_01_sfnt_off000083e7.bin
6d95bb5e0251b920a9764ccc918690a910b4901eebdf6c0878bf0d7e0e2360a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E7 18524 bytes

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