Malicious PDF — malware analysis report

Static analysis result for SHA-256 b705589d77a99912…

MALICIOUS

PDF

48.0 KB Created: 2021-06-10 20:07:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2aef63ebaeee2901191140d91b328100 SHA-1: aa25edb7535c7884d0841bb0cb3a3840e12ee2f2 SHA-256: b705589d77a99912ae1c80e35029d8e87e42465a8ca2bdb7e65e242525e52914
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are structured as SEO-optimized PDF links, suggesting a link farm or content aggregation tactic. The document body and extracted URLs indicate a lure for game cheats and hacks, likely leading to malicious downloads or further phishing attempts. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/el-mejor-hack-para-juegos-de-roblox-game-hack
    • http://library.imz.or.id/repository/free-coins-for-flip-master_GM406889139.pdf
    • http://library.imz.or.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://library.imz.or.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://library.imz.or.id/repository/minecraft-app-store-free_GM479516143.pdf
    • http://library.imz.or.id/repository/free-download-roblox-studio-20-beta_GM431946152.pdf
    • http://library.imz.or.id/repository/coin-master-hack-no-verification_GM406889139.pdf
    • http://library.imz.or.id/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdf
    • http://library.imz.or.id/repository/robloxheroxyz-free-robux_GM431946152.pdf
    • http://library.imz.or.id/repository/coin-master-facebook-hack_GM406889139.pdf
    • http://library.imz.or.id/repository/coin-master-new-cards-hack_GM406889139.pdf
    • http://library.imz.or.id/repository/coin-master-hack-tool-v1-9-download_GM406889139.pdf
    • http://library.imz.or.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdf
    • http://library.imz.or.id/repository/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://library.imz.or.id/repository/energize-roblox-hack_GM431946152.pdf
    • http://library.imz.or.id/repository/prison-life-roblox-hacks_GM431946152.pdf
    • http://library.imz.or.id/repository/coin-master-apk-hack-35-8_GM406889139.pdf
    • http://library.imz.or.id/repository/get-free-spins-coin-master_GM406889139.pdf
    • http://library.imz.or.id/repository/minecraft-windows-10-edition-free_GM479516143.pdf
    • http://library.imz.or.id/repository/coin-master-cheats-and-hacks_GM406889139.pdf
    • http://library.imz.or.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051fd.bin
fa751a8cd261d9dec6b803ef2bae966514b046afad26dad35f59b89b82e06263		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51FD 24820 bytes
font_01_sfnt_off00008b47.bin
eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B47 2940 bytes
font_02_sfnt_off00009557.bin
1c226a390b0cb81bb2aa99ca89c536b9242372e50c55ab24c5ccaa2ff0d28c87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9557 19480 bytes

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