Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0ddad7592606c0…

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 08:46:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f230096e1e7b5b912fcab411ff48db26 SHA-1: d266edfa6f05e0ad6167b055e0bcb7ffcd3da892 SHA-256: ac0ddad7592606c092338411715ce2afbec8509a7eca3260a89c2f23eacd858b
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a document body promoting "how to hack" games like Roblox and Coin Master. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, likely to facilitate a link farm or distribute malicious content. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the PDF. The primary attack pattern involves luring users to click these links, which likely lead to malware downloads or phishing pages.

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-hack-roblox-accounts-2021-october-game-hack
    • http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verify_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/roblox-hack-autohotkey-roblox-piano-player_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/roblox-hack-tool-download-android_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/all-links-for-free-spins-coin-master_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-cards-and-spin-link_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-ways-to-make-your-roblox-avatar-small-rthro_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-fan-hack_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/roblox-forcefield-hack_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/jailbreak-roblox-free_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-ninja-animation-roblox_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/game-stealing-service-free-roblox_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-marshmellow-head-on-roblox_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/how-can-you-get-robux_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-shirts-suits-roblox_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/steal-peoples-robux-hack_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/hacker-minecraft-song_GM479516143.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/robux-for-free-2021-no-vertification_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/roblox-speed-cheat-codes_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d77.bin
0833fc01fd86878f24ec62bc93f86c2faeacf38f22d2811a8f6d1ea9c1e9ed00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D77 22272 bytes
font_01_sfnt_off00005edf.bin
b48cdf01a022e62dc033a7beeac2ad7bdd5ef581306f30611abbfe2e3dabe938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 19468 bytes

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