Malicious PDF — malware analysis report

Static analysis result for SHA-256 729beba56eb5c9c0…

MALICIOUS

PDF

32.7 KB Created: 2021-07-20 06:30:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d07e0932c4bb7598fdee2f924e2b22f9 SHA-1: 3083567353a534ea35a5c99186b6958b06010c11 SHA-256: 729beba56eb5c9c0c9f0a5b8d11ad1f09cf91d44c0c4df6a008b75fb28407146
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links, including one pointing to a 'coin-master-free-spin-codes-game-hack' URL, which is a common lure for phishing or malware distribution. The document body also contains a call to action to access a 'COIN MASTER GENERATOR'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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-free-spin-codes-game-hack PDF link annotation
    • http://hindicenter.com/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/minecraft-free_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/get-minecraft-windows-10-free_GM479516143.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_002_off00002b90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B90 22748 bytes
SHA-256: a8b9ca5f693a795b44d53078a97ba12e7214f1e97d22f7b24609c5168fd38ba7
font_01_sfnt_off00005e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E64 18060 bytes
SHA-256: 6c6954b9f81c735a5c4580de4c42457a99792272849cec4d30b191d18cdb5601

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