Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9256a7cb4b557b…

MALICIOUS

PDF

35.0 KB Created: 2021-06-20 09:52:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bad56f1d612bd8ff44f3f144e4c03ff8 SHA-1: d247d1ebc3f76b5a9901d3dcbc5864a9c2073ad9 SHA-256: eb9256a7cb4b557bb1467858cfa1a079f9a1961b906d542de81239ecb1298dc6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are SEO-optimized PDFs promising free in-game currency or hacks. The document body explicitly mentions 'Free Robux Generator Tool Download Link' and includes a direct URL to a potential download. This indicates a phishing or scam attempt designed to trick users into downloading malware or visiting malicious sites. The presence of many external links suggests a link farm or a method to distribute further malicious content.

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-robux-generator-tool-download-link-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-skina-free-copy-paste_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-lumber-tycoon-2-hack-tool_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-do-you-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-bc-admin-leaked_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-how-to-cheat-on-tycoon-games_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-superhero-package-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/wurst-18_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 22032 bytes
SHA-256: 5e8edc5c957bb3f04b896f66625e870880b52e31d3d5f526ef1d9e6e5c215fcb
font_01_sfnt_off000061e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E0 19688 bytes
SHA-256: 1f4c0a423877330e369a0bf15bba0d53492f6e03f95b2826b2a5e11c9da12c7b

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