Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84464b64cb41d75…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 23:29:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 19d4032241d4cd9e3ff872f8b5b10436 SHA-1: f6541bf6ed51cc4fe47c4f18f417b56d19b1b3fe SHA-256: e84464b64cb41d753a388883bb5adaf49430a5cb051294f82a96bc66ae699965
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to sites offering game hacks and free in-game currency. The primary URL, http://netcdn.tw/app/479516143/simplysarc-game-hack, likely serves as a download point for a malicious payload. The heuristic findings indicate a link farm designed to attract users with lures related to popular games, suggesting a phishing or malware distribution attempt.

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/479516143/simplysarc-game-hack
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/daily-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/download-coin-master-hack_GM406889139.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/generetaror-roblox-free_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/minecraft-realms-free-codes_GM479516143.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-to-install-roblox-jailbreak-hacks_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-many-levels-does-coin-master-have_GM406889139.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-apps_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/roblox-glasses-code-to-get-for-free_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/robine-roblox-hack_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021-or-survey-generator_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/is-minecraft-bedrock-edition-free_GM479516143.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/roblox-no-download-hack_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/coin-master-free-spins-apk-2021_GM406889139.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-to-get-cloth-goku-free-roblox_GM431946152.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-do-you-install-minecraft-for-free_GM479516143.pdf
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe0.bin
5fe2b4d1e29f0213766933404e9bbb3f5946d1d329c407cd1c4cefb30f976309		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22564 bytes
font_01_sfnt_off000061d0.bin
7c23f3e3d318805df684302eb3460a013bc43601185b4b54a2bf1903bd620144		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D0 18440 bytes

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