Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb90c85930292419…

MALICIOUS

PDF

33.2 KB Created: 2021-07-01 16:28:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 04a40fd560b7f0e841c66ae91c06556b SHA-1: 5601eaaf32ab70ac0515e462bf299c6946f68b23 SHA-256: eb90c85930292419943558ef6f9ff91499905d477ec6614ba3a8f84a1462bdeb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to websites offering free in-game items or hacks. The ML classifier also flagged this PDF as malicious. The presence of a download button lure further supports the malicious intent, suggesting the document is part of a phishing or scam campaign designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-get-free-thumbnail-in-roblox-studio-game-hack
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-candy-game-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/exploit-hack-roblox-free-download-mod-menu_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/prison-life-roblox-hack-download_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/admin-cheat-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/hacker-skin-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-items-on-roblox-2021_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-april-fools-hack-face_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-clothing-on-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-stuff-on-roblox-xbox-one_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-tiktok-fans-and-likes_GM835599320.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-things-for-free-in-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/play-roblox-bloxburg-for-free_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/ming-simulator-roblox-hack_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cda.bin
74db625c33cc35e0512be5bb77c7d728d37bc6a160540f72e6b5030c23669beb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDA 21240 bytes
font_01_sfnt_off00005b2f.bin
6cf6eeaa976522aad9c5470ff41cc2c80ee37949fdc4765356d04a973f503989		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2F 19776 bytes

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