Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e19c336b1776f2…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 04:53:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2a841b3b0573f39ab159a0bf824ab159 SHA-1: aba9a9d6f15d52b6416d50d460a577b45a66357a SHA-256: 07e19c336b1776f20d13b2cdb03ab8f2b9eb4483c3ddd5fcca73820df799c466
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which appear to be related to game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a malicious intent to redirect users to potentially harmful content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of numerous external links and the overall structure strongly suggest a phishing or malware distribution attempt.

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.tw/app/835599320/tiktok-free-view-59-game-hack
    • http://digilib.stie-yppi.ac.id/repository/free-spins-coin-master-links-twitter_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/how-to-become-admin-on-roblox-for-free_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/10-know-this-give-free-robux-secret_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-minecraft-java-server_GM479516143.pdf
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hack_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-commands-admin_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-cheat-codes_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-coin-master-android_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/holocene-hack-roblox_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/robux-download_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-real_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/roblox-howt-to-get-free-hats-on-rolbox-high-school_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/roblox-cheating-story_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-roblox-codes_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002efe.bin
a24afa11d65ee05a4ee97874b57074ed20fbe541354eac161144ebcd5dca0e89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFE 21468 bytes
font_01_sfnt_off00005e08.bin
7dc6885a6f20bf0be4ed42a542e1a303df4ad0923424dc9dee00985bc4b46523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E08 18568 bytes

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