Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae6783c539211ab…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 21:06:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 25da1d2ea0b275e8753ab7b2794c4dce SHA-1: d5cc99114feccbe9a1667af143ed89b13feb206c SHA-256: 1ae6783c539211ab4209a8c583aa5f615b38856c3eab3b8aa774c9f307f58689
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are structured as SEO-optimized PDF link farms. The primary URL, http://netcdn.co/app/431946152/free-avtar-roblox-game-hack, suggests a lure for free in-game items, likely leading to a download of a malicious payload. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious download lure.

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/free-avtar-roblox-game-hack
    • http://www.salwangurgaon.com/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • http://www.salwangurgaon.com/files/coin-master-rewards_GM406889139.pdf
    • http://www.salwangurgaon.com/files/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdf
    • http://www.salwangurgaon.com/files/free-pro-tiktok_GM835599320.pdf
    • http://www.salwangurgaon.com/files/code-for-the-roblox-hack-generator_GM431946152.pdf
    • http://www.salwangurgaon.com/files/minecraft-complete-handbook_GM479516143.pdf
    • http://www.salwangurgaon.com/files/how-to-get-free-robux-2021_GM431946152.pdf
    • http://www.salwangurgaon.com/files/games-that-give-you-free-robux_GM431946152.pdf
    • http://www.salwangurgaon.com/files/free-coin-master-spins-2021-link_GM406889139.pdf
    • http://www.salwangurgaon.com/files/free-minecraft-mods-for-xbox-one_GM479516143.pdf
    • http://www.salwangurgaon.com/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • http://www.salwangurgaon.com/files/how-to-get-free-robux-without-email_GM431946152.pdf
    • http://www.salwangurgaon.com/files/coin-master-free-spins-no-verification_GM406889139.pdf
    • http://www.salwangurgaon.com/files/minecraft-free-download-ios_GM479516143.pdf
    • http://www.salwangurgaon.com/files/free-robux-no-more_GM431946152.pdf
    • http://www.salwangurgaon.com/files/robux-code-hack-for-robux-2021_GM431946152.pdf
    • http://www.salwangurgaon.com/files/hack-coin-master-free_GM406889139.pdf
    • http://www.salwangurgaon.com/files/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • http://www.salwangurgaon.com/files/coin-master-rare-cards-hack_GM406889139.pdf
    • http://www.salwangurgaon.com/files/free-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003206.bin
b3b81667d5540090e85fb6a7ff03f36c8568384f2be0c50b5b8ccfce762896e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x3206 22048 bytes
font_01_sfnt_off000062f5.bin
40716bd0289448151981ca27466bf3e15750bce0c11fdf802b27abd3b69193d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 18868 bytes