Malicious PDF — malware analysis report

Static analysis result for SHA-256 a285329a7e747b5a…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 14:46:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a92402e8557a3f7bbe25ea1694bbca04 SHA-1: 0c8cccf6c26cefb163a12bdb24c39f03f85709e5 SHA-256: a285329a7e747b5a91818803bc45810ca5018978c38ee6cd02795505c1b73ea0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which are related to game hacks and cheats, suggesting a lure for potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure further supports this. The document likely aims to redirect users to exploit kits or download malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9826

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.online/app/431946152/free-roblox-gear-game-hack
    • http://pustaka-smpn3tpi.com/repository/coin-master-jackpot-hack_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/is-coin-master-hacks-safe_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/hack-coin-master-game-apk_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-2021-generator_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/minecraft-pocket-edition-free-download_GM479516143.pdf
    • http://pustaka-smpn3tpi.com/repository/free-coin-spin-daily-link-coin-master_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-roblox-2021_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdf
    • http://pustaka-smpn3tpi.com//repository/robux-fun-hack_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-link_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/apps-for-free-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/free-robux-gift-card-codes_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spin-link-today-50_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/how-can-i-get-minecraft-for-free_GM479516143.pdf
    • http://pustaka-smpn3tpi.com/repository/irobux-com-redeem_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005226.bin
e07300be9c8d176f9302159ce933f059564bf8bf47095fe38994983658d0c131		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5226 24868 bytes
font_01_sfnt_off00008ba7.bin
b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 2880 bytes
font_02_sfnt_off00009592.bin
6ea9eee9688bd29c5e0b74536b9be2ab390210d742e4038285307cb30709fc72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9592 18176 bytes

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