Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a460b7c3323aca…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 12:41:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c82e30d4b961a31c8ffbfaa096e8627d SHA-1: 7704d4cba2f1d877903d18ffad4ddd5728ab598e SHA-256: 26a460b7c3323aca2e061103a7d0babed61884526c975c14482e282eeabf07de
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a document body promoting game hacks and cheats, suggesting a lure for users to download further content. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which are structured to appear as SEO-friendly PDF documents, likely serving as a link farm. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/how-to-hack-assassin-roblox-2021-game-hack
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-cheat-free_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/its-free-real-estate-roblox-id_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/rbxoffer-com-free-robux_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/how-do-i-earn-robux_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-free-spins-2021-blogspot_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/get-free-spins-on-coin-master-2021_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/how-to-become-pubg-uc-seller_GM1330123889.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/how-to-download-roblox-hack-tampermonkey_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/what-games-give-you-robux_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/how-to-get-free-robux-for-real_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/mcpe-master-hack-unlimited-coins-download_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/tiktok-free-like-website_GM835599320.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-spins-coin-master-2021-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003306.bin
ce4470fa9a5b068c5f531a858e2cea80957a982d3f25ac5f8fa3ac04f1df038e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3306 21656 bytes
font_01_sfnt_off00006285.bin
b3c10e9585c27bd23fda142c6e6abf2d2bb63f5f89c8dd7dacb64597fe455e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6285 19340 bytes

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