Malicious PDF — malware analysis report

Static analysis result for SHA-256 07da36b714d5b217…

MALICIOUS

PDF

47.0 KB Created: 2021-06-10 14:16:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 70bf1a50589d1a9ac2140f77482b636c SHA-1: 6efd87551adda8cb1bae07ae7db7b05f00f09f9a SHA-256: 07da36b714d5b217117f14915fb56299e11108fbf6f18fd1bce2db1dc209f04f
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 point to external PDF files, forming a link farm. The content appears to be a lure for game-related cheats or free items, suggesting a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of a call-to-action button further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/roblox-cheat-engine-mac-game-hack
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-spins-no-survey_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-rewards-link_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-100-robux_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-free-exploits_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-generator_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-soins_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/tiktok-free-view-iphone-horizontally_GM835599320.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-hackcom-xyz_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-roblox-groups-with-funds_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/optifine-minecraft-pe_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-hack-in-mm2-roblox_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/hack-roblox-2021-17-de-junio_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-spins-coin-master-app_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-coin-and-spin-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000056e9.bin
6cff1f421da6e113005ee016d8ae19433a47690b8bccca8ab5038812bdd1f4d3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56E9 26636 bytes
font_01_sfnt_off00009381.bin
6c0e559e3006a9ca4775f5bb5b1853651f77e425be8df41989779e30da97aaaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9381 18888 bytes

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