Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c10dd575603cce…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 20:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ef8d4597028f02d18deef112db2a1ff1 SHA-1: bf081018a9681a13386bb0a1bf59b22b17bd36f9 SHA-256: b6c10dd575603cce03d4a48e1c3e1ae5f3625a147751a704a266e834dc40188c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized and point to sites offering free in-game currency or hacks. The document body and heuristics indicate a lure to click these links, likely for phishing or scam purposes. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/free-daily-spins-coin-master-game-hack
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/clean-master-free-coins-and-spins_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/real-free-robux-codes_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/como-hackear-coin-master-2021-espaol_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/card-hack-in-coin-master_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/coinmaster-blogspot_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-minecraft-website_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/static-moonactive-net-free-spins_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/minecraft-bedrock-free-download-pc_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/hack-coin-master-pc_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/robux-online_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-robux-redeem-codes_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-robux-working_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ac9.bin
4d5b181608d7c105b22248e45f6e1cad6853942dd5317faac5be835ef8be9f1c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC9 24316 bytes
font_01_sfnt_off00008272.bin
55eaac4e6bbee5e06de7435d22c867d27a3c8151a397b13177f5239675c95764		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8272 18308 bytes

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