Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e54cc7784dcc8fc…

MALICIOUS

PDF

41.0 KB Created: 2021-05-12 01:33:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b851c030b5987ac746d26e3de93e1d80 SHA-1: 16db56a628ba5106b5ee18720e05514c70159296 SHA-256: 8e54cc7784dcc8fca9777842e2f8fb2862a5e88207ec6b461f08701a671a4941
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which appear to be related to game hacks and cheats, suggesting a lure for users to click through to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download' button heuristic further supports the idea that the document is designed to trick users into downloading something harmful.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-monster-game-hack
    • http://stikespantirapih.ac.id/home/repository/cheats-coin-master-free_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/online-coin-master-hack-here_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/how-to-get-hacks-on-roblox_GM431946152.pdf
    • http://stikespantirapih.ac.id/home/repository/robuxy-com-free-robux_GM431946152.pdf
    • http://stikespantirapih.ac.id/home/repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/minecraft-games-online-free-no-download_GM479516143.pdf
    • http://stikespantirapih.ac.id/home/repository/coin-master-link-today_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/free-spin-today-coin-master_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/free-roblox-shirt-templates-2021_GM431946152.pdf
    • http://stikespantirapih.ac.id/home/repository/chisel-and-bits-mod-pe_GM479516143.pdf
    • http://stikespantirapih.ac.id/home/repository/roblox-com-hack_GM431946152.pdf
    • http://stikespantirapih.ac.id/home/repository/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spin-ml_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/free-roebucks-no-human-verification_GM431946152.pdf
    • http://stikespantirapih.ac.id/home/repository/legit-free-spins-coin-master_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/free-robux-without-offers_GM431946152.pdf
    • http://stikespantirapih.ac.id/home/repository/how-do-u-get-free-robux_GM431946152.pdf
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-no-human-verification_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/best-site-for-free-coin-master_GM406889139.pdf
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004951.bin
96d1c03561960279b8c3c0cf50e858dc1845df8610b8660f575503fe22286238		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4951 24464 bytes
font_01_sfnt_off00008074.bin
54c278ffcec73a9655cb4160ce6dd033c6157d5b4cbbc3723f9166d6c62366d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8074 17320 bytes

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