Malicious PDF — malware analysis report

Static analysis result for SHA-256 1130c4fe82e8c144…

MALICIOUS

PDF

33.3 KB Created: 2021-06-28 11:25:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cca5a3accdd6d0d940311c94b3ab43ee SHA-1: f96e8b5e2a35e404f3765e4261ca908681f9e85c SHA-256: 1130c4fe82e8c144a7e8f192999e28bd7a15611b0cd74ce9bf9f1dd750cd7b36
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are presented as 'SEO link farm' content related to game hacks and cheats for popular games like Roblox and Coin Master. The document body also contains similar lures and a call-to-action phrase, indicating an attempt to trick users into visiting malicious external sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/god-mode-hacks-for-roblox-game-hack
    • http://digilibfisip.unla.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/download-apps-for-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/hack-coin-master-for-free_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/hack-me-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-do-i-get-free-robux-and-tix-on-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/minecraft-pe-hack-client-ios_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-coin-master-cards_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/counter-blox-roblox-offensive-cheat_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-auto-clicker-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/cookie-logger-hack-roblox-account_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-use-cheat-engine-on-roblox-retail-tycoon_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-become-admin-on-roblox-hack_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/hack-for-roblox-wont-get-banned_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-noclip-in-roblox-with-cheat-engline_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-pc-hack-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b17.bin
26bd4025fb318547df16d897253fc005297f22a304d086ddf25315e7f4dffa01
pdf-font-stream PDF embedded font (sfnt) at offset 0x2B17 22416 bytes
font_01_sfnt_off00005d1c.bin
602d203e79e874a1d9b6868b89141d440e89a4e4ba5b90437ef4548b89b9c708
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1C 19188 bytes