Malicious PDF — malware analysis report

Static analysis result for SHA-256 e676bed032bc6ff4…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 14:37:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bbb1120d4bd482c0279cf6d7a95265dd SHA-1: 20d3b01ff70c443702c161e9a5a092da6499a5db SHA-256: e676bed032bc6ff4b0a4d05f7405f517794c1a6084ef32e5f839e2232df297c4
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which are SEO-optimized PDFs designed to lure users with promises of game cheats and virtual currency. The primary external URL, http://netcdn.co/app/431946152/password-generator-roblox-hack-game-hack, likely serves as a download point for a secondary payload. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or malware distribution scheme.

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/password-generator-roblox-hack-game-hack
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-dominus-in-roblox-catalog_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-a-free-minecraft-account_GM479516143.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-link_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-make-free-audio-in-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/bloxpink-free-robux_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/generator-free-robux-facil_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-you-get-free-robux_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-stuff-in-roblox-2021_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-cheat-apk-mod_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/chatsfor-roblox-for-free-rubux_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-112-2_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc8.bin
0c287edb6b1ae855174ae5bb74f7e92fd9cb294a1041d287eb398227452c8564		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC8 22232 bytes
font_01_sfnt_off00006164.bin
75dca7291e5c21d0bb93473ac2a7ecd00045516e31b78a06e1b61553184602dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 19252 bytes

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