Malicious PDF — malware analysis report

Static analysis result for SHA-256 447edbeaec289494…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 14:46:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 247019f7909e58003b0f8e1a635a317b SHA-1: 307ffca2111f146c6f25841af3812ce291c0e335 SHA-256: 447edbeaec289494f5ab76e3bd5b2d0bf5b909eb0862761e53d121bf49f98749
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/game-hunters-coin-master-game-hack PDF link annotation
    • https://vieclamjapan.com/upload/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/does-roblox-detect-cheat-engine_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/hackbox-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-know-if-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/hoe-to-get-a-vip-server-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/cool-roblox-avatar-for-free_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/rbx-place-free-robux_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
stream_002_off00003211.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3211 23292 bytes
SHA-256: 845fa8d7b6e0d0eb902857589b3e26f62c65ef185beb04cfa2a024fac8dce188
font_01_sfnt_off00006643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 18236 bytes
SHA-256: 1c9276275f01b8ee8a35d94754bfc2cd49d6bf50d60c60048a77e6e66c35f9e8

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