Malicious PDF — malware analysis report

Static analysis result for SHA-256 35e9839681d092ae…

MALICIOUS

PDF

37.7 KB Created: 2021-06-18 02:05:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4a7e46f37961259627e16ce0dc2d8842 SHA-1: a9a95c4d2106f9ad855b1ced76b0fd2215bb005e SHA-256: 35e9839681d092ae7501e67bf64c8845614e0155cf7609b719d1832bd1faebbb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful content. The presence of a download button lure further supports this, aiming to trick users into downloading unwanted files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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/comment-hacks-roblox-skywars-game-hack
    • http://library.stikessuakainsan.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/free-minecraft-mods-for-ps4_GM479516143.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-version-ios_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/who-hacked-cuteluccy9-on-roblox_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/rblx-gg-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/create-vip-server-roblox-free_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-spin-link-coin-master_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/free-coins-coin-master-haktuts_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/hacks-para-roblox_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-spins_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/hacks-roblox_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-version-download-2021_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/roblox-robux-hack-generator_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/roblox-hack-2021-how-to-get-free-robux-and-more_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/promo-code-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003ba7.bin
9c46233a0465b37a273356e546d1bc21f43368cc22ee33acf869add26ca0ac2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA7 22436 bytes
font_01_sfnt_off00006d9e.bin
14289148a1477bea268183b67aaf39a8a6a01613eb94846a7c55ee6b32aefd97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9E 19364 bytes

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