Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa46a045e32a5af2…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 01:47:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e742fd05c36fa6c7b29fed5f82e99bb9 SHA-1: bb36ed96b85f59e86a18597e4ac26b88da6c7f72 SHA-256: fa46a045e32a5af2e5905be4ee0c4a706dc79cca088a4bf0f2148dbaebe19ff3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a "how to hack" theme, strongly suggesting a phishing or scam attempt to lure users to malicious websites. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which are likely part of a link farm designed to attract traffic or distribute malware. The ML classifier also flagged this PDF as malicious with high confidence.

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/how-to-hack-robux-with-cheat-engine-game-hack
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/wurst-112_GM479516143.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/minecraft-bedrock-server-hosting-free_GM479516143.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-hack-the-hood-roblox_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/link-hacks-madpaintball-roblox_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/roblox-free-view-camera_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-app-for-free-spins_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-link_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-hack_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-hack_GM479516143.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-generator-for-kids_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/roblox-booga-booga-hack_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-obby-on-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_off00003189.bin
a35848041ebd7bb23a04dc62eebeab3655ce30a9575d878b2bc1a2a30bacdc5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3189 22392 bytes
font_01_sfnt_off00006329.bin
4b6bc0ec0db162417e1e0a69140fddd062c9e57112f5c0c500bd088f93a18b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6329 19472 bytes

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