Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc6209dbf0ec4d2…

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 03:06:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 470ca329eed64d79d6bf243ab1853ef6 SHA-1: 244862546dc89b1f5867cfdb745c6d396ce92aa5 SHA-256: ecc6209dbf0ec4d2476283ad78c5dc541acf3a5844adc2088f8347883066333a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which are hosted on domains that appear to be part of a link farm designed to attract users searching for game cheats and hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" heuristic further supports a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the primary attack pattern involves social engineering through deceptive links.

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.tw/app/431946152/comandos-para-hackear-roblox-game-hack
    • http://opac.pps.uin-alauddin.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/pubg-uc-zip_GM1330123889.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/robux-2021_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/javascript-free-robux_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spins-and-coins-app_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-minecraft-coins_GM479516143.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-robux-app-2021_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-coin-master-spins_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/the-easier-way-to-get-free-robux_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/withdraw-robux_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-extra-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ec.bin
b367a1f1f6e7116fda78672c13ab32510710deba55fa03c4d28edab2af7216a1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50EC 26696 bytes
font_01_sfnt_off00008f06.bin
a1742ed81b48b65c358ac4d285d180921c2ef62bb83c378228f2675f153670a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F06 18768 bytes

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