Malicious PDF — malware analysis report

Static analysis result for SHA-256 62443bc701b654d8…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 07:36:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ca03ec2121759537f3d04a0f0d14a687 SHA-1: bd449ab9514cf2dc834d67b304f51933d916d5e5 SHA-256: 62443bc701b654d894e5bf83f69495776e74a776def29ce05f072ea00b79b985
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are related to hacks, free currency, or cheats for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' score is very high, suggesting malicious intent. The document likely serves as a lure to direct users to malicious sites or to download further malware.

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/835599320/how-to-get-free-tiktok-like-game-hack
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-hack-client-pc-download-aimbot_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-roblox-card-code-generator-online_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/your-cheating-on-your-roblox-girlfriend-meme_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-pe-hacks_GM479516143.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-not-fake_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-gift-card-generator_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-free-robux-mod-menu_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/get-robux-for-free-2021_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-pet-snacks-coin-master_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-robux-and-tickets_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-levels_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-no-verification-needed_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-online-free_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/guide--coin-master-free-tips_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/daily-free-spins-for-coin-master_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-free-no-virus_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da0.bin
0c6191cd90b35c012961d2b204d7b8bc06b1850ae879ef3320ed7bbb1417afd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA0 22288 bytes
font_01_sfnt_off00005f0e.bin
c1c9b3991c7881bfc46fb90feac599004e51710517cd311dcd1d21b2c5618f66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0E 18136 bytes

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