Malicious PDF — malware analysis report

Static analysis result for SHA-256 b689c3c3c18ec124…

MALICIOUS

PDF

45.3 KB Created: 2021-05-12 14:34:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8aa8aec63009e39b784fca39622d92db SHA-1: d707e71b2f40d197931ff164f2cc2283380a6b7d SHA-256: b689c3c3c18ec1241a9062bda32d9c351f377d74a41b64db2a15d8b6f88173cf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a prominent call-to-action lure, directing users to websites that promise game hacks and free currency. The ML classifier also flagged this PDF as malicious. The primary link, 'https://netcdn.xyz/app/406889139/coin-master-free-coins-and-spins-online-tool-game-hack', is likely a landing page for a phishing or scam operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/406889139/coin-master-free-coins-and-spins-online-tool-game-hack PDF link annotation
    • https://www.sonestad.se/library/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B5F 25488 bytes
SHA-256: d3a2854d56168ca93795495326457868668f04b6e15d9e872f2c1f05dc879534
font_01_sfnt_off00008576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8576 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F27 18132 bytes
SHA-256: 5770a65a4ed8a40abc6da47fa935f6885b77eddd7dd52b1dc7a39247a3b65962

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