Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c40df049199378…

MALICIOUS

PDF

36.5 KB Created: 2021-07-06 08:36:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8473ff9dadf27a0d845047a6d55e1d04 SHA-1: 56f82ed2c19fcfd0ed87a6b4a5c171aa85352b44 SHA-256: 88c40df049199378ab3d03dd259f7ba57bb236964d7225f248c87aa7f13647ab
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 hosted on domains related to game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to drive traffic to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious. The document body, though partially corrupted, contains references to 'how to hack Roblox' and includes URLs that likely lead to malware downloads or phishing pages.

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.tw/app/431946152/how-to-hack-roblox-acocunt-game-hack
    • http://pustaka.fateta.unand.ac.id/repository/free-roblox-hack_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/free-games-to-download-like-roblox_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-free-roblox_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/free-script-executor-roblox_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-pe-server-hosting-free_GM479516143.pdf
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdf
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-hack-ios-download-2021_GM406889139.pdf
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/hacks-minecraft_GM479516143.pdf
    • http://pustaka.fateta.unand.ac.id/repository/descargar-roblox-hack-robux-infinitos_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/download-coin-master-hack-mod-apk_GM406889139.pdf
    • http://pustaka.fateta.unand.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdf
    • http://pustaka.fateta.unand.ac.id/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://pustaka.fateta.unand.ac.id/repository/best-free-spins-for-coin-master_GM406889139.pdf
    • http://pustaka.fateta.unand.ac.id/repository/robux-survey_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/theme-park-tycoon-2-roblox-hack_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/como-ser-hacker-en-roblox-jailbreak-2021-mayo_GM431946152.pdf
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-pe-mod-menu_GM479516143.pdf
    • http://pustaka.fateta.unand.ac.id/repository/download-apps-for-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_off000035ce.bin
85d1dfcf3faa61152fd4b6f60ace885611fde4022eb1d4e13df00009ef5e01df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35CE 23144 bytes
font_01_sfnt_off000069f0.bin
e6a9a6e12805b12c1127f3cfea4e2629d37d28226e3821f7bad80d968a91b654		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 18880 bytes

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