Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8eee93b31845751…

MALICIOUS

PDF

45.4 KB Created: 2021-06-04 01:31:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cb8131b2177adff96398660e72db1ea1 SHA-1: ee9cf5487ff136fd85203e43b55133773667fa3e SHA-256: a8eee93b318457513cc4863ef7d404378d8c1642e51931683d38333c2cc3a8c7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats. The ML classifier and PDF link farm heuristics strongly indicate malicious intent. The presence of embedded URLs and the document's structure suggest it is designed to trick users into navigating to potentially harmful sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/406889139/coin-master-free-spins-hack-iphone-game-hack
    • https://library.uigm.ac.id/repository/robux-online_GM431946152.pdf
    • https://library.uigm.ac.id/repository/how-to-hacka-roblox-account_GM431946152.pdf
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • https://library.uigm.ac.id/repository/minecraft-pe-free-download_GM479516143.pdf
    • https://library.uigm.ac.id/repository/hack-the-game-coin-master_GM406889139.pdf
    • https://library.uigm.ac.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdf
    • https://library.uigm.ac.id/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdf
    • https://library.uigm.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdf
    • https://library.uigm.ac.id/repository/what-do-roblox-points-do_GM431946152.pdf
    • https://library.uigm.ac.id/repository/minecraft-bedrock-download_GM479516143.pdf
    • https://library.uigm.ac.id/repository/games-for-robux_GM431946152.pdf
    • https://library.uigm.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdf
    • https://library.uigm.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • https://library.uigm.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • https://library.uigm.ac.id/repository/minecraft-story-mode-free-download_GM479516143.pdf
    • https://library.uigm.ac.id/repository/rich-free-roblox-accounts_GM431946152.pdf
    • https://library.uigm.ac.id/repository/minecraft-apk-free-download_GM479516143.pdf
    • https://library.uigm.ac.id/repository/roblox-free-robux-com_GM431946152.pdf
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • https://library.uigm.ac.id/repository/village-3-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005126.bin
3860865d089b2854a47671c8929de4b22dea4b62bacfd03ec535377985631eae		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5126 27536 bytes
font_01_sfnt_off00008f8f.bin
1dfaaa5fda009d523ba1163bf16545e2c66f7621c16cb7ff5e9bef64f998ba72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8F 18220 bytes

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