Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d53d1ad5e907e2…

MALICIOUS

PDF

35.6 KB Created: 2021-07-01 14:59:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 16100d306435bf900c2a768b807fc506 SHA-1: aee9f452cc38cfbbf2eb8623fcb21d4bb2354c24 SHA-256: 29d53d1ad5e907e29b20aea686f215720728adf7a637aa15747668ab1fc07d74
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a primary URL pointing to sites offering game hacks and cheats, indicating a lure for users to download potentially malicious content. The heuristic firings, particularly 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS', strongly suggest malicious intent. The document body itself contains references to these lures and the tool used to generate the PDF.

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/roblox-hacks-extensions-game-hack
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-free-items-on-roblox_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/pubg-mobile-uc-qatar_GM1330123889.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/www-free-robux-hack-generator-club_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-iphone_GM406889139.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-spin-whatsapp-group_GM406889139.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-spin-gratis-coin-master_GM406889139.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/flame-gg-free-robux_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-no-download-or-email_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-open-a-hack-in-roblox_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-actually-get-free-robux_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox-hack-mobile-generator_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/hack-coin-master-spin-android_GM406889139.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/robux-no-human-verification_GM431946152.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-free-download-windows-10_GM479516143.pdf
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/all-free-items-in-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_off000033e1.bin
b51a8abc7c75322d341473a4935eb86f1e9931b0dfc7abd7dbb9a09e273e1863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33E1 22624 bytes
font_01_sfnt_off0000666d.bin
6ac4a09ee4e576c6491ebf059e7a8c5f1448b8694565dab15a57d00a3284ebda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666D 18880 bytes

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