Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ddaac98d339353c…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 15:11:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7565481ff8b2f092d0b05c08383b49f1 SHA-1: af1bafd47d2c03ea8b2c722794fe6ba69c0b84c0 SHA-256: 6ddaac98d339353cf42edb8d1bcb80d0e2a47b304885dcf7798d98e0f1c56aa5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are SEO-optimized URLs related to game hacks and free currency for popular games like Roblox and Coin Master. The presence of a 'download button' lure further suggests a malicious intent to redirect users to potentially harmful sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-coins-link-march-2021-game-hack
    • http://lib.stie-aub.ac.id/repository/roblox-hack-v2-1_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-september-2021_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-roblox-promocode-november-2021_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/robux-hack-just-put-user_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-items-with-roblox-card-walmart_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-robux-apk_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/hack-peoples-accounts-oh-roblox_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/apocalypes-rising-roblox-hacks_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-hack-pizzeria-simulator-roblox_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-fast-on-computer_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/roblox-game-card-free-codes_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/download-roblox-mod-apk-free-robux_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-hack-robux-on-roblox-download_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/roblox-lumber-tycoon-2-hack-pastebin_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/pubg-uc-cheap_GM1330123889.pdf
    • http://lib.stie-aub.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-any-item-in-roblox-for-free_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-robux-dont-earn_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031be.bin
d7cafcff036715e8db4094f6018f504a72e52ff24c6b96d281b50c4b64e827a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31BE 22496 bytes
font_01_sfnt_off00006404.bin
1810aa1194408988f889930d2b316369f9abc71c28062134bfa3042e826aa82e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 18736 bytes

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