Malicious PDF — malware analysis report

Static analysis result for SHA-256 80754e2e71896ed0…

MALICIOUS

PDF

34.5 KB Created: 2021-06-25 22:00:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 11715f98fdbb75b961f60b9bf8291c3f SHA-1: 6a887bb4b7a8c6ebe15d2909aacb706df67d0cec SHA-256: 80754e2e71896ed04ccccb90c82c4cf41c85159490156ed5eef5b33cc8ea3bc0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a "download button" lure, suggesting it is designed to trick users into downloading malicious files. The heuristic firings indicate a "PDF SEO Link Farm" and a "ML classifier flagged this PDF" with high confidence, supporting the malicious intent. The document body and extracted URLs focus on game-related cheats and free items, a common lure for malware distribution.

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/roblox-character-free-to-use-game-hack PDF link annotation
    • http://pustaka.faterna.unand.ac.id/repository/cheat-engine-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/como-hackear-roblox-para-tener-robux-en-android_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hacking-into-ldshadowladys-roblox-account_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/jake-paul-merch-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-2021-no-waiting_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/denis-daily-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-verification-or-grantor-trust_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/thebesian-get-roblox-ninja-animation-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3059 22368 bytes
SHA-256: 3ec23738b1a23e2854bce0ba538e87a9b5cafc4167caa5c674746af5abe5df70
font_01_sfnt_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 18920 bytes
SHA-256: 4f714f1c9549771f972d3d119ea11e33e9d2d9a9d24df19a366f19ccb8c7e9e1

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