Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ece5849e22297f…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 22:59:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4400addde3d6c8def3757a258e263de8 SHA-1: 96e0242c1d5d527f91ed04ebeda84b246d758eb1 SHA-256: 73ece5849e22297faac3ac6b36a662f4d30a00c5958a8860208a7fda50c7ad2d
142 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on domains related to game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to distribute malicious content. The presence of a 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that users might be prompted to download password-protected archives, a common tactic to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/roblox-rtd-awakening-cheats-game-hack
    • http://library.feb.unila.ac.id/rfeb//repository/minecraft-hacked-apk_GM479516143.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/fisicuffs-cheat-codes-roblox_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/cch-ly-robux-free-minhmama_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/robloxhacks_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-play-a-game-that-cost-robux-free_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-login-hack_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/gold-cards-coin-master-hack_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/get-black-eggs-free-egg-simulator-roblox_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-codes-2021-for-adopt-me_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-robux-hack-robux-generator_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/cute-free-roblox-clothes_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-no-password_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-free-robux-on-2021_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-spins-link-2021-haktuts_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-no-human-verification-2021-ipad_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003006.bin
be05661a002da9349a0404bb7f78e2660ca79f1d798dc84b3b08bd46cc3f799e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3006 22176 bytes
font_01_sfnt_off0000613b.bin
9d38192e17f61bb14b8a82f83383b966a97dbaa929407538e9a3576fa9a40cd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613B 19200 bytes

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