Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e62381076f74cac…

MALICIOUS

PDF

35.4 KB Created: 2021-06-26 02:18:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 50638025bdbb55a33cbef812083a0231 SHA-1: 7466e8643e0cef6ac6ce05d847eecb716d48b106 SHA-256: 6e62381076f74caca216f6d717a17c2a1cb3089a233b4fd6e9aaf4dd6346a5e7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a link farm designed to lure users with promises of game hacks and cheats. It contains a large number of embedded URLs pointing to external resources, many of which are also PDFs, suggesting a coordinated effort to drive traffic. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a call-to-action button further supports a malicious intent, likely to lead users to phishing or malware download sites.

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-bring-in-to-roblox-school-hack-game-hack
    • http://library.patria-artha.ac.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/free-minecraft-java-server_GM479516143.pdf
    • http://library.patria-artha.ac.id/repository/roblox-hack-site-no-human-verification_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-coins-and-spins_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/how-to-get-free-gamepass-in-roblox-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdf
    • http://library.patria-artha.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/roblox-free-without-sign-in-also-free-robux-no-downloading_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/how-to-change-your-roblox-name-for-free-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/link-for-free-coins-in-coin-master_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/free-coins_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-robux-generator-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/roblox-game-download-for-pc-free_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/free-clotrhes-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/how-to-hack-yourself-up-in-a-group-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_off0000325b.bin
5508858536c4bac86d5c475a14772371d896e90b10e7674f3324d449b74ec806		 pdf-font-stream PDF embedded font (sfnt) at offset 0x325B 22776 bytes
font_01_sfnt_off00006553.bin
251f0453d346fc3b2705bf23d47da12daed33f64f972e795f32442106b793992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6553 19104 bytes

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