Malicious PDF — malware analysis report

Static analysis result for SHA-256 618e97d0a5349b91…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 12:15:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7eb3466f806dfce4aaf343a59d689abe SHA-1: c8f5e052eec116aaa5735b7a7631343ae5218427 SHA-256: 618e97d0a5349b91ac3475f03ebc9123bd09c12a011384e54b7f60c1228e4b9b
102 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are structured as SEO-optimized PDF documents, suggesting a link farm designed to attract users searching for game-related cheats. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick users into clicking malicious links. The ML classifier strongly indicates malicious intent.

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/how-to-get-free-robux-hack-on-computer-game-hack
    • http://library.futureuniversity.com/repository/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://library.futureuniversity.com/repository/free-vip-server-for-speed-race-roblox_GM431946152.pdf
    • http://library.futureuniversity.com/repository/how-to-get-bloxburg-for-free-roblox_GM431946152.pdf
    • http://library.futureuniversity.com/repository/free-roblox-script-loader_GM431946152.pdf
    • http://library.futureuniversity.com/repository/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • http://library.futureuniversity.com/repository/free-robux-hacks-no-verification_GM431946152.pdf
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdf
    • http://library.futureuniversity.com/repository/hack-dragon-ball-rage-roblox-mobil_GM431946152.pdf
    • http://library.futureuniversity.com/repository/hack-console-roblox_GM431946152.pdf
    • http://library.futureuniversity.com/repository/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://library.futureuniversity.com/repository/hack-magnet-simulator-roblox_GM431946152.pdf
    • http://library.futureuniversity.com/repository/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://library.futureuniversity.com/repository/free-robux-no-apps_GM431946152.pdf
    • http://library.futureuniversity.com/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • http://library.futureuniversity.com/repository/robux-prices_GM431946152.pdf
    • http://library.futureuniversity.com/repository/free-minecraft-worlds_GM479516143.pdf
    • http://library.futureuniversity.com/repository/ultimate-hack-for-roblox-unpatchable-level-7_GM431946152.pdf
    • http://library.futureuniversity.com/repository/free-unlimited-robux-no-human-verification_GM431946152.pdf
    • http://library.futureuniversity.com/repository/coin-master-hack-pro-gamers-com_GM406889139.pdf
    • http://library.futureuniversity.com/repository/how-to-get-any-item-free-in-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000314f.bin
77dcb929b59a82c6a6082a134bdbb33a29750904ee4b3b8d2cd751b371f03b33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x314F 22400 bytes
font_01_sfnt_off00006345.bin
2a6e45418bc5c056f849d6b975f35db89b9bc43865d0bd64a96a319a447a0996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6345 19588 bytes

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