Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6d7809e2638d87…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 22:44:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3b49a4f5ab21edabe31e58fdd6940020 SHA-1: ab7f302bad6cf8c23d7449ee516bbbb8a19a514d SHA-256: 8d6d7809e2638d87be8b3fbf070c1b323afd85b9b4a5272b46d3ff15c41f205b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are hosted on domains suggesting a link farm or SEO manipulation tactic. The document body and extracted URLs indicate a lure related to hacking online games, specifically Roblox and Coin Master. The presence of embedded URLs and the ML classifier's high confidence score suggest this PDF is designed to redirect users to malicious content or download further payloads.

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/admin-hack-roblox-espaol-game-hack
    • http://perpustakaan.ipts.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://perpustakaan.ipts.ac.id/repository/hack-coin-master-mod-apk_GM406889139.pdf
    • http://perpustakaan.ipts.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/free-roblox_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/friendly-face-free-roblox_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • http://perpustakaan.ipts.ac.id/repository/robux-fun-hack_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/coin-master-ultra-attack-hack_GM406889139.pdf
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/coin-master-claim-spins_GM406889139.pdf
    • http://perpustakaan.ipts.ac.id/repository/get-free-robux-nowcom_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdf
    • http://perpustakaan.ipts.ac.id/repository/free-robux-no-download_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/wall-hack-roblox-cbro_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/codes-for-free-sp-in-ice-cream-simulator-roblox_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/free-roblox-promo-codes-2021-april_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/rmc-free-roblox-aimbot-download_GM431946152.pdf
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e70.bin
4c067252c81748a098c8f72b714e796fe56db2388315c3566731fcb0c0b7d484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E70 22944 bytes
font_01_sfnt_off000060d4.bin
f5f55a323ebf328c35da85973fc3bd4c7a1381c5413046416785d2269ad3bedb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D4 19388 bytes

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