Malicious PDF — malware analysis report

Static analysis result for SHA-256 b987583ba160112e…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 03:09:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 810d80178833345cf98f4b7db79b5d03 SHA-1: f4bf1ed465e7c716363948a2e0b218ef5f3db759 SHA-256: b987583ba160112e7131a00309eef06fd622012e241229026e7b210a91aa2840
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, with a primary lure related to 'free spin coin master' and game hacks. The document body and heuristics indicate a redirection to potentially malicious sites, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into downloading further malicious content or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-spin-coin-master-2021-link-game-hack PDF link annotation
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/games-for-robux_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://kkmman.e-learningman1bitung.com/__statics/gudangsoal/files/download-coin-master-hack-mod-apk_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
stream_003_off00004d17.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D17 26060 bytes
SHA-256: 6512d515892c3d4f2574a355a5e1544e935bda2619ea5f25b562187c1fd53fa0
font_01_sfnt_off0000893e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893E 18456 bytes
SHA-256: 7500aca679d0fadfbda1e17cf023a195ee80a601fef81e7f7ced8cf50182af56

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