Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee39b23ff33152f0…

MALICIOUS

PDF

34.3 KB Created: 2021-06-30 09:41:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0ad45d042f78d97760e897fefb594c60 SHA-1: dd81c330eb9a48f81ff6dfc050e5e44c779cb181 SHA-256: ee39b23ff33152f0384f976a09e4a3bdd8d3130b2655e6ba4826d6a88d92a23b
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are SEO-optimized and point to game-related hacks and cheats. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's primary function appears to be a link farm designed to trick users into downloading malware or visiting malicious sites.

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/unjailbreak-hack-roblox-descargar-game-hack PDF link annotation
    • http://opac.ekonomi.up45.ac.id/repository/chreck-cashed-v3-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/dance-routine-hack-for-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/hack-script-boku-no-roblox-remastered_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/roblox-banning-simulator-hack_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/roblox-anti-speed-hack-fe_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/roblox-games-money-hack_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/how-do-i-get-free-robux-on-roblox_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_off00002e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E99 22540 bytes
SHA-256: 3ed9a1a18ab97843eca4ebc10904ff57b241462f3611e908854c5059678e691c
font_01_sfnt_off000060cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 19132 bytes
SHA-256: f9afcc170d515459831dc46596c9c0a3e75b7d1186d6ba2175040f620b2701d6

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