Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cc2a01ae5684a2…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 00:36:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: edf56c72e758f745fd91f958db4cf677 SHA-1: 6aa4cb88c610aa43cefe07e189ff7f4cae04d797 SHA-256: 34cc2a01ae5684a2c24a221548e083536e9d57e57171cca954b2b0292c332531
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to SEO spam pages, many of which are related to game hacks and rewards. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the 'ML_NYX_PDF_MALICIOUS' score is very high. The document body and embedded links suggest a lure for users interested in free game currency or hacks, which is a common tactic for distributing malware or generating ad revenue.

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/fighting-free-card-coin-master-game-hack
    • http://www.avorganic.org/uploaded_files/userfiles/files/free-spins-for-coin-master-hack_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/rewards-roblox-com_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/lucky-patcher-coin-master-hack_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/free-robux-easy_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/20210-free-spin-links-for-coin-master_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/how-to-get-free-faces-on-roblox_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/coin-master-400-spin-link-hack_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/coin-mster-free_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/roblox-pink-free-robux_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/coin-master-hack-app-ios-download_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/coin-master-coin-hack_GM406889139.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/rbxfree-com-free-robux_GM431946152.pdf
    • http://www.avorganic.org/uploaded_files/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004993.bin
73d79678921f5ed9ef06a49e56ce0613c45ac1b5f699042a0cf6db68b0ebbbf3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4993 24352 bytes
font_01_sfnt_off000081a9.bin
f0cd4d6bae61bb9f7721c88e5b38a7df4c9de99d8fb8d81dbaccb772e8fa5d98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81A9 18336 bytes

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