Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c67c24e37262365…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 01:49:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5e88fbd99eb4f5be929ac9fe88799c88 SHA-1: e65b0387e845382846901bf7a6764317963e4f9e SHA-256: 2c67c24e37262365bed0673286ab59d9fd223625abd3badc39bcf2f81ca8b35c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to resources related to game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of numerous links suggests an attempt to direct users to malicious websites or download further payloads. No scripts were extracted, but the overall structure and link farm indicate a phishing or malware distribution attempt.

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.tw/app/406889139/master-coin-free-spin-daily-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/best-free-t-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-speed-hack-las-vegas-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-booga-booga-speed-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/exploit-engine-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-lumber-tycoon-2-script-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-1-million-robux-for-free-really-easy_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-roman-belgica-youtube-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/assassin-roblox-hack-script-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-font-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3395 22768 bytes
SHA-256: c0d0d080dda4f233bbf3d4e005b4638315f1dd0052b5aad7ade27d60a86e0e33
font_01_sfnt_off0000667e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667E 18596 bytes
SHA-256: 115892fac058e21728dd73f14dd50efb9625691fb0bdc47d6e9343c2bb96a73b

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