Malicious PDF — malware analysis report

Static analysis result for SHA-256 5762023b4c82e4dd…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 22:07:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 60e33328ad24cbe1cdfd5b47e3f44b06 SHA-1: e54d69cce6498d7000e889a0b34e60a6d01e06ff SHA-256: 5762023b4c82e4ddfb390fee306fcec6c9c3361e49ba6daf441803849516bcfe
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded links to external PDF files, many of which are SEO-optimized and related to game hacks and cheats. The presence of a "download" button lure and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content or applications. The document's structure and content strongly suggest it is part of a link farm or phishing campaign designed to attract users searching for game exploits.

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/coin-master-card-hack-apk-game-hack
    • http://library.fikes.upnvj.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/apps-for-free-robux_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/coin-master-hack-no-verification_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/hack-coin-master-iphone_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/coin-master-free-coins-link_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/free-minecraft-account-list_GM479516143.pdf
    • http://library.fikes.upnvj.ac.id/repository/coin-master-golden-cards-hack_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/minecraft-toolbox-premium-apk_GM479516143.pdf
    • http://library.fikes.upnvj.ac.id/repository/coin-master-free-spins-link-download-apk_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/ww-robux_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/moonactive-free-spins-coin-master_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/free-robux-not-a-scam_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
    • http://library.fikes.upnvj.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/coin-master-hack-pro-gamers_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdf
    • http://library.fikes.upnvj.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • http://library.fikes.upnvj.ac.id/repository/coin-master-time-speed-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004972.bin
32d494f63b0cb6d94bed1b7a9406c27ed4321d91edf7805a54bd3e5366a09c6c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4972 24844 bytes
font_01_sfnt_off000081fc.bin
253c022fea36e2edfdded8e932a5d2c5ace7c2c75107348eb73538d72e63084f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81FC 18068 bytes

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