Malicious PDF — malware analysis report

Static analysis result for SHA-256 8054c60f157db928…

MALICIOUS

PDF

34.5 KB Created: 2021-06-21 08:49:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b58b1417fe2dccba924ac561bc97d82a SHA-1: 0cd5a42426f95e8f0bf89eeb9ca3821d4796fd24 SHA-256: 8054c60f157db9280696def1dad30eb6938f5ef67b83623d0a61b425106bbddc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the embedded URLs suggest a phishing or scam attempt. No scripts were extracted, but the document's content and linked URLs are indicative of a social engineering attack.

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.co/app/431946152/how-to-get-free-robux-on-pc-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/admin-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-gift-card-numbers_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hack-robux-sin-verificacion_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00002fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD8 22416 bytes
SHA-256: f8b454ebd534b63cc28644c78a68d31fe5fd75c9eee12066ef4353df1634ba80
font_01_sfnt_off000061bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BF 19136 bytes
SHA-256: aef8c40112b84489b97b1b1a2bbf6c88e9b8fe4bc85a356f803a45374dab5087

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