Malicious PDF — malware analysis report

Static analysis result for SHA-256 8725a492f5199b70…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 14:43:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 23063671f3749f4387a7bf8a5f499a5f SHA-1: 191b3c136e24d4ef6121dd5a54072a2de2f8915c SHA-256: 8725a492f5199b709082a38f1e91576ef89900f1bcfaa437a253c1a53bf86070
102 Risk Score

Malware Insights

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

This PDF document was generated by wkhtmltopdf and contains a large number of SEO-optimized links, many of which point to game-related hacks and cheats. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to lure users to external sites. The primary attack pattern involves directing users to download potentially harmful content through a link farm.

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/youtube-how-to-use-cheat-engine-on-roblox-game-hack
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-spins-coin-master-hack_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-roblox-game-card-codes-2021_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/minecraft-auto-miner-hack_GM479516143.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-my-account-got-hacked_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-free-spins-cheat-codes_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-free-music_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-spins-coin-master-links_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-hack-unlimited-robux_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-hack-unlimited-robux-free-download_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/mais-backpack-free-roblox_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/hack-in-roblox-to-get-robux_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-coin-master-spins-blog_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-robux-hack-2021-no-human-verification_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/explaining-video-free-robux-and-diamonds_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-really-hack-coin-master_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-sexually_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003035.bin
1b43de1a7f29ad4204056d90b3db86965cf4c6bf4b57318699b3d3636803cd19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3035 22164 bytes
font_01_sfnt_off00006156.bin
1e0dcecc8051769dcb9d35d7bf27b53d27444aff37214f03dfe37b2423b61062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6156 19340 bytes

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