Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0eacd0ed75ea049…

MALICIOUS

PDF

35.3 KB Created: 2021-06-18 19:47:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 922cc4df3b5727045ef331b547f11846 SHA-1: d7d9a66c98ce3857c00899a661def0d2a03196dd SHA-256: c0eacd0ed75ea0493fd9d0da3dd1b50b95f6cc05526b00a9710955f45169d50d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering free game currency and hacks, suggesting a link farm or scam lure. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious intent to redirect users to potentially harmful content.

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/free-robux-no-human-verification-or-survey-2021-game-hack
    • http://bw.ac.th/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdf
    • http://bw.ac.th/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • http://bw.ac.th/userfiles/files/roblox-ninja-animation-package-free_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/free-robux-instantly_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/how-to-get-java-minecraft-for-free_GM479516143.pdf
    • http://bw.ac.th/userfiles/files/can-i-get-free-robux_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/coin-master-fan-club_GM406889139.pdf
    • http://bw.ac.th/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdf
    • http://bw.ac.th/userfiles/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdf
    • http://bw.ac.th/userfiles/files/minecraft-apk-free-download_GM479516143.pdf
    • http://bw.ac.th/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/play-minecraft-for-free-on-pc_GM479516143.pdf
    • http://bw.ac.th/userfiles/files/coin-master-spins-2021_GM406889139.pdf
    • http://bw.ac.th/userfiles/files/no-human-verification_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
    • http://bw.ac.th/userfiles/files/how-do-you-get-free-robux_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/claim-coin-master-free-spins_GM406889139.pdf
    • http://bw.ac.th/userfiles/files/inappropriate-roblox-games-2021_GM431946152.pdf
    • http://bw.ac.th/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030cf.bin
72b37320861afe2a822edeef25454d2423257a86a1f28008f84a8bb42cc1bf34
pdf-font-stream PDF embedded font (sfnt) at offset 0x30CF 22300 bytes
font_01_sfnt_off00006284.bin
73853a3976ad02b985999ffcd6140ae9e6fbeae1b64c4ed7f053ccfa6faa7a2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6284 19844 bytes