Malicious PDF — malware analysis report

Static analysis result for SHA-256 d882d8f59cba0f8c…

MALICIOUS

PDF

35.2 KB Created: 2021-06-21 11:55:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b7b27eae64bff67d93cf3b7f4c389e33 SHA-1: 1d544a85f62698a2e1229d9d60ccc1d6c9e78685 SHA-256: d882d8f59cba0f8c9964cf214d18f2d58f5abbbb9669d1d9d3251017fe064954
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a "Get Free Robux" lure to entice users, containing numerous links to external resources, many of which are SEO-optimized PDF files related to game hacks and cheats. The presence of a "Click here to download" call-to-action, combined with the ML classifier flagging it as malicious and the heuristic identifying a link farm, strongly suggests a malicious intent to redirect users to potentially harmful content or downloads.

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/get-free-robux-on-ipad-2021-game-hack
    • http://elitesoftsolutions.com/images/best-free-minecraft-hacked-client_GM479516143.pdf
    • http://elitesoftsolutions.com/images/roblox-admin-hack-mega_GM431946152.pdf
    • http://elitesoftsolutions.com/images/coin-master-hack-tool-pc-download_GM406889139.pdf
    • http://elitesoftsolutions.com/images/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdf
    • http://elitesoftsolutions.com/images/get-free-robux-without-human-verification_GM431946152.pdf
    • http://elitesoftsolutions.com/images/how-to-get-free-cards-on-coin-master_GM406889139.pdf
    • http://elitesoftsolutions.com/images/free-roblox-accounts-generator_GM431946152.pdf
    • http://elitesoftsolutions.com/images/free-robux-apps-that-actually-work-quick-download_GM431946152.pdf
    • http://elitesoftsolutions.com/images/free-roblox-boy-hair_GM431946152.pdf
    • http://elitesoftsolutions.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://elitesoftsolutions.com/images/coin-master-spin-and-coins-free_GM406889139.pdf
    • http://elitesoftsolutions.com/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdf
    • http://elitesoftsolutions.com/images/how-to-make-the-animation-free-in-roblox_GM431946152.pdf
    • http://elitesoftsolutions.com/images/cheat-codes-for-coin-master_GM406889139.pdf
    • http://elitesoftsolutions.com/images/minecraft-bedrock-download-pc-free_GM479516143.pdf
    • http://elitesoftsolutions.com/images/free-gfx-roblox_GM431946152.pdf
    • http://elitesoftsolutions.com/images/cch-ly-robux-free-ko-hack-2021_GM431946152.pdf
    • http://elitesoftsolutions.com/images/best-sites-to-get-free-robux_GM431946152.pdf
    • http://elitesoftsolutions.com/images/coin-master-hacks-for-android_GM406889139.pdf
    • http://elitesoftsolutions.com/images/roblox-hack-no-survey-or-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f12.bin
d69dbdc9dd5b3d7079b1234b4be68097645643b89e0f070f77121d4c306ab408
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F12 22912 bytes
font_01_sfnt_off000062a2.bin
9a770d6f1aa0cd402ee45712a7a9df439ae4d5ccafdd2ac34df5f2b690437394
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 19572 bytes