Malicious PDF — malware analysis report

Static analysis result for SHA-256 089031acd17a1808…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 18:28:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: adf8f54b6f4f7e1b6dbbf3bd51ba7704 SHA-1: c8b31a8b40b36e194d126cd36c9fdf469479ce52 SHA-256: 089031acd17a1808b3b4fc65b3fd48275b1e4361ffe44f6416e27d5c7b27d15d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.tw/app/406889139/coin-master-spin-link-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-account-cracker-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-keep-roblox-from-lagging-when-hacking_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cheats-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-do-speed-hack-on-roblox-mad-paintball_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-maniac-hack-for-free-pin_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-1-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-xrad-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-code-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-avatare-free_GM431946152.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_off00003057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3057 22872 bytes
SHA-256: 9ed24c62d45aef892e6660f6e3d2a4d51e9e258553ed637c9f4b8ed13ec21d43
font_01_sfnt_off000063ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC 18180 bytes
SHA-256: 6f1c3345af99086e4401991befec5a43a6ea280f4df42811c95578481334f0e1

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