Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a55dd47fb82e610…

MALICIOUS

PDF

43.6 KB Created: 2021-05-19 09:39:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 00f060c086c9d6d40414c04f856d827b SHA-1: 6ad4f15fb0bcf54fa89328eadcb2bbfb36b83071 SHA-256: 3a55dd47fb82e6106e984dd30ba73168925468d71469ea56e984eec294155808
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO link farms for game hacks and free spins, suggesting a phishing or malware distribution attempt. The presence of a 'download button' lure further supports this. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow designed to trick users into downloading unwanted or harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/479516143/minecraft-free-download-no-virus-game-hack
    • http://bob-reid-music.com/uploads/files/files/how-to-get-free-spins-in-coin-master_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/coin-master-apk-hack-358_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/daily-coin-master-free-spins_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/coin-master-links-free-spins_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/free-modded-minecraft-server-hosting_GM479516143.pdf
    • http://bob-reid-music.com/uploads/files/files/how-to-become-a-hacker-in-roblox_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/how-to-sue-roblox_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/how-to-get-free-robux-hack_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/free-multiplayer-minecraft-server_GM479516143.pdf
    • http://bob-reid-music.com/uploads/files/files/roblox-no-download-hack_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/free-robux-that-actually-works_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/free-spins-coin-master-2021-no-verification_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/coin-master-free-spin-no-offers_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/can-you-get-free-robux-on-roblox_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/free-coins-app-for-coin-master_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/free-spins-from-coin-master_GM406889139.pdf
    • http://bob-reid-music.com/uploads/files/files/roblox-studio-free-robux_GM431946152.pdf
    • http://bob-reid-music.com/uploads/files/files/minecraft-client_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d95.bin
be8028580dd5e85f16940aee4a3e40d6506ac2a547360b3d67195e54afb739e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D95 25356 bytes
font_01_sfnt_off00008749.bin
73fda2f7f87cf364c845d3fc1df52f7bb102f180f2e093609ba7690804eae928
pdf-font-stream PDF embedded font (sfnt) at offset 0x8749 18564 bytes