Malicious PDF — malware analysis report

Static analysis result for SHA-256 74ea8e0476c90502…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 01:02:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3756c4c24a3aefa3b44b66615530ae73 SHA-1: 830739b38ccdeda1c3256a360e990ddc1fa3289c SHA-256: 74ea8e0476c9050280f5f675c9a148d3fe78b53edb9301ce9c6af147b4d3bc73
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a high-confidence heuristic indicating a game hack redirect lure. The document body and extracted URLs promote 'Coin Master Hack Tool 2021' and other game-related cheats, aiming to trick users into clicking malicious links. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering attack to redirect users to potentially malicious content.

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-hack-tool-2021-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/youtube-greenlegocats-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-unlimited-robux_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
stream_002_off00003009.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3009 22780 bytes
SHA-256: e69cbb041cb3d2886e6e61cbf5b54289794c747206be29f5cd5ead94d9634370
font_01_sfnt_off000062fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FE 18480 bytes
SHA-256: 3dc977bc1210ceeedde7f87719dab6f525ca5e29bcd32cbe92ee8e1a0ab21cbd

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