Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7f7c229a56b43a…

MALICIOUS

PDF

35.9 KB Created: 2021-06-23 04:57:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a0140257f97f5a983fc80236f258cae6 SHA-1: 15d34d6e226fa646467f4d81362474cda839fb56 SHA-256: 8d7f7c229a56b43a6d4690984effdde5ab92d4caada1806154266dec39c29a63
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external sites, many of which are structured as PDF files themselves, suggesting a link farm or redirection to malicious content. The document body and extracted URLs indicate a lure for free in-game items or cheats, a common social engineering tactic. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent to trick users into downloading further payloads.

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/how-to-spawn-stuff-in-roblox-using-cheat-engine-game-hack
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-human-verification_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/9-billion-robux-hack_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-get-minecraft-coins-for-free_GM479516143.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/stain-roblox-free-shop-t-schirts_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-free-spin-daily-link_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/get-roblox-free-online_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-free-spins-apk_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/roblox-hack-no-verification-no-survey_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/master-coin-hack-app_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-gameplay_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/hack-the-coin-master_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-gift-card-generator_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-generator-for-kids_GM431946152.pdf
    • https://sitecontabil.com.br/ckfinder/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033d9.bin
533a24f082f584a8afc71578b52debdced695333de8eaddfaf38f8fef7e2090f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33D9 22856 bytes
font_01_sfnt_off00006666.bin
60b0351d3ef6d3f7ffbd2b026151441e49ca7da04b3b3e2e6867be186e529283		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6666 19356 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.