Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7c444597d849dc…

MALICIOUS

PDF

34.1 KB Created: 2021-06-27 06:49:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9f73376e872f2af98a7a6f80cbfa5b4b SHA-1: d6386b39d59e63990c1594637891a209443f99b5 SHA-256: 4f7c444597d849dc452d2b42e54a196e97941734d7a9e20dfc88f3e41c008840
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to pages offering game hacks and cheats, such as 'Roblox Aimbot Free Download'. The ML classifier strongly flagged this PDF as malicious, and the presence of a mass external link farm suggests a deceptive intent to redirect users to potentially harmful content. The document body reinforces this by explicitly mentioning game hacks and download links.

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/roblox-aimbot-free-download-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/how-to-be-a-roblox-hacker-and-hack-accounts_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-destroy-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/comment-devenir-un-hacker-sur-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/10-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-robux-with-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-dbz-final-stand-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-generater-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-tool-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/homo-jews-hacking-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/cheat-engine-roblox-hacks-218_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D05 22256 bytes
SHA-256: 865e6207e4fa924ac6fdd902b29537fa8e920cd865029f48cf8d87783cb5105f
font_01_sfnt_off00005e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6E 19640 bytes
SHA-256: 3ea142f6517d211db5842b1e528e895420a109530f4b311746d015780d475352

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