Malicious PDF — malware analysis report

Static analysis result for SHA-256 d932e9a470a4441d…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 10:37:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4d07d64502a7f08bba0f5ed76be63e4a SHA-1: 10a22d24f17b2abbc4f66fcb0d33695b98b02502 SHA-256: d932e9a470a4441d3a3d4841cd2f4258952bd0d1661d8302c515f93d2d429b20
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which are structured as SEO-optimized URLs pointing to game-related hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a link farm designed to redirect users to potentially malicious sites. The document body, though heavily obfuscated, contains references to game hacks and download links, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/coinmasterfree-game-hack
    • http://pustaka-smpn3tpi.com/repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/roblox-hack-app_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/free-spin-link-in-coin-master_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/best-minecraft-hacked-client-2021_GM479516143.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/hack-coin-master-game-apk-download_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/free-robux-games-on-roblox_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/robux-hack-tools_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/minecraft-pe-server-hosting-free_GM479516143.pdf
    • http://pustaka-smpn3tpi.com//repository/minecraft-ps3-free-download_GM479516143.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-mods-for-pc_GM479516143.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-ios-no-human-verification_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-link-facebook_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-online-hack-no-human-verification_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-spin_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/are-minecraft-realms-free_GM479516143.pdf
    • http://pustaka-smpn3tpi.com/repository/wwwcoin-master-hack-game-download_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005137.bin
cd9de68cf128a48b44fe4e55fa82d0f75bc554a174e014b87ce5a4c48621acca
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5137 25236 bytes
font_01_sfnt_off00008bb5.bin
ed5fdd5441acd06a3bb02758ac945137dbfa7be696a0962169bf0eb95ec74bb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB5 17808 bytes