Malicious PDF — malware analysis report

Static analysis result for SHA-256 59eadf778c22658d…

MALICIOUS

PDF

34.3 KB Created: 2021-06-20 04:15:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 82be36f45ba5f949e5b3ab2a4f18212f SHA-1: e08190c61a65d41a370878e043f1be2fa1826f85 SHA-256: 59eadf778c22658de3d19e35eea438efddc85aafd4762f745423bbdfc3be5bdc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a specific external URL that are designed to lure users into clicking them by promising cheats or free items for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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-all-roblox-games-pc-game-hack
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-500-spins-link_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-code-generator-roblox_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-spin-coin-master-2021_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-download_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-in-a-game-in-roblox_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/roblox-naruto-final-bond-cheat-lev-up_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/rape-simulator_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/robux-free-com_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-roblox-gift-card-codes-2021_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-codes-may-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e7.bin
3726ec0e7134818f01fee97ca6663c0336cd268e78d0a6956ca4d43d694c528b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30E7 21652 bytes
font_01_sfnt_off00006063.bin
3891ddd0f9055fd5fb88a6fac01a943489160193ddf0acd48856bfd0e4d16271		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6063 19232 bytes

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