Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f9f03dda47f53b…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 01:19:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4b5edb731dc222115ccfeae04fdc9f21 SHA-1: a5a58018bfbe7f1c77a8eeb6e37ac8538a9a06b6 SHA-256: d1f9f03dda47f53b0bd19d4bae935c028bc05fde3125161ce03d1373893785da
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary URL pointing to a 'coin-master-card-hack-app-game-hack'. This indicates a lure to trick users into visiting a site that likely hosts malware or phishing content. The ML classifier strongly flagged this PDF as malicious, supporting the game hack lure. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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-card-hack-app-game-hack PDF link annotation
    • http://lib.untad.ac.id//repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-free-robux-no-phone-number_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-cs-ro-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/10-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-how-to-getting-the-grade-youtubers-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/pubg-uc-unipin_GM1330123889.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-upgrade-to-roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-top-battle-games-read-online-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-shading-templates_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/tnf-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-5-steps_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-fly-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/code-for-naruto-roblox-free-spins_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/syntetisia-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/comment-avir-des-robux-sans-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-links-for-free-spins-2021_GM406889139.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_off00002db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB2 22424 bytes
SHA-256: 26ba8b220d412c531d1a55423b4cfe03045f854a819d9c335697246ab9d04eb5
font_01_sfnt_off00005fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 18352 bytes
SHA-256: 7a6741876b8a4f47fa99d807c74985d7cbc04f51e0567589917582e4a0dfbcea

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