Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac93ffca45d3e6b…

MALICIOUS

PDF

47.5 KB Created: 2021-05-18 01:42:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c22f8c900a17b433f83e239ff787542c SHA-1: 5f18cd1dab139399fb9158cccdcbde325ac0d4e6 SHA-256: 1ac93ffca45d3e6b1b1832e21df4af1b013d6549a993d45fc603ca2358abee3e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links to external PDF documents, suggesting a link farm or SEO manipulation tactic. One prominent URL, 'https://netcdn.xyz/app/479516143/game-toolbox-game-hack', is directly referenced and likely serves as a lure for downloading malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/479516143/game-toolbox-game-hack
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/minecraft-aimbot_GM479516143.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/spin-coin-master-hack_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-robux-today_GM431946152.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/how-do-i-get-robux-on-roblox_GM431946152.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-android-1_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/blogspot-coin-master_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-2021-free-spins-link-today_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/download-hacked-games-coin-master_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-coin-link_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-spins-for-free-on-coin-master_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/robux-converter_GM431946152.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdf
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-blogger_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005041.bin
51010eacc8a8d33fcc7f09941b3c605ab3382fa4e3ae9e7076eb74adcd7d9b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5041 27648 bytes
font_01_sfnt_off00008d91.bin
cc332f84a1b842d762e7fa50a7573a5896d96a25c21b785503f9ac338e1a97b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D91 3000 bytes
font_02_sfnt_off000097e2.bin
cc5ae47c5e11d0f88656729761c41b71782f27a7f5283d48097ca54d7cfe7015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97E2 18188 bytes

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