Malicious PDF — malware analysis report

Static analysis result for SHA-256 d16b1687e0ee3c77…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 12:27:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6b9ad1e0cc39a9d27ed7adc9c349c73c SHA-1: 52a92bb458e41b0e6e1345d93e3d9e8162237c59 SHA-256: d16b1687e0ee3c77897026343c728109f406ee644baf83ddae551698d8b42209
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized and point to files related to game cheats and exploits. The presence of a download button lure and a high ML classifier score strongly suggest malicious intent. The document's primary purpose appears to be directing users to download potentially harmful 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.co/app/431946152/phantom-forces-roblox-rank-hack-game-hack
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-minecraft-server-maker_GM479516143.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/trigon-best-free-roblox-exploit_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-minecraft-java-account_GM479516143.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-roblox-outfits-for-boys_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-minecraft-maps_GM479516143.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/como-descargar-hacks-para-roblox-sin-virus_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/minecraft-free-download-iphone_GM479516143.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-coin-master-spins-blog_GM406889139.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-fucking-get-free-robux-2021-real-omg_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-get-free-cars-in-roblox-high-school_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-hack-on-roblox-2021_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/cheats-for-roblox-2-player-wizard-tycoon_GM431946152.pdf
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003010.bin
51d3e636a46d906f5ec686ca9192c83d42a71aed787b2f61ef293a45b6658e01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3010 22348 bytes
font_01_sfnt_off000061cb.bin
7a4ba975de4e9292fc6eef483ad405728ff0866c26b7868652bba475608907c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 19504 bytes

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