Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3f789fda089769…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 04:39:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d0c1fa165049e5a65b83e10f1854c5c1 SHA-1: 11d143976b3db43a0accd9af9fd3b7025d9cc593 SHA-256: ad3f789fda089769fc2f0219c95144ed978627476b57723ee5ffa9a120d2aa00
142 Risk Score

Malware Insights

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

This PDF document employs social engineering by presenting itself as a source for game cheats and hacks, specifically mentioning Roblox and Coin Master. It contains numerous embedded URLs, including one pointing to 'netcdn.co', which likely serve as download locations for malicious payloads. The heuristic 'SE_BROWSER_INSTALL_LURE' further suggests a user-driven installation of potentially harmful software.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/urbis-roblox-money-cheat-game-hack
    • https://ciptawiratirta.com/assets/CKImages/files/blox-fish-free-robux_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-hack-no-verification-no-signup_GM406889139.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/google-how-can-i-get-free-robux_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-gift-card-codes_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-in-a-roblox-game_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/google-for-free-robux_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-card-collection-link_GM406889139.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/gaming-app-cheats-roblox_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-free-link-app_GM406889139.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-hack-robux-into-your-account-2021_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-get-free-robux-on-phone-android_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/como-ser-hacker-en-roblox-en-movil_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/today-coin-master-spin-free_GM406889139.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-free-spins-bit-ly_GM406889139.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-anime-cross-2-hack-money_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-rc7-hack-download_GM431946152.pdf
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-download-roblox-ccv3-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef2.bin
6df2d4b6fe8ae3105da59d67f044d43fa2e80c84eceb071a0972cfb54427f4b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF2 22212 bytes
font_01_sfnt_off00006045.bin
233cc7f456497ebe10fb649620b65abe3b6ff8df714d09886160cf6ee50c0b5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6045 19252 bytes

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