Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c09de595c48517…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 20:24:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 44fb63e0e6ccdb5b22dc371290495aa7 SHA-1: 85e7fb8836df9b60b246bc27c0602775650aea28 SHA-256: 89c09de595c48517c7f03f23bc7d3f63692d3f3d161fb1581657365568f9e315
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, forming a link farm designed to direct users to pages offering game cheats and rewards. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure further supports a malicious intent. The document's primary function appears to be acting as a lure to external, potentially malicious, content.

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/406889139/coin-master-free-food-for-pet-game-hack
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-rewards-coin-master_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-script-executor-lvl-7-roblox-2021_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-change-roblox-username-for-free_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-gold-cards-free-2021_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/websites-for-robux_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/speed-hack-for-all-games-roblox_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/can-u-stiull-hack-roblox-with-cheat-engine_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-pastebin-no-wait-2021-may_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-50-000-robux-for-free_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/what-do-points-do-in-roblox_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-glitch-2021_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/full-roblox-free_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/minecraft-java-code-free_GM479516143.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/minecraft-java-free-trial_GM479516143.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/how-do-you-get-roblox-for-free_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-free-money-on-arsenal-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032e7.bin
957671678badb06bb33bff00d9f2961171295317647f7944a59ba69f0ecb2d1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32E7 22980 bytes
font_01_sfnt_off00006683.bin
a6873962f5bddc2cf38d0571dfc0863cc8f572ddf4d3185f76e76edba002005f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6683 18324 bytes

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