Malicious PDF — malware analysis report

Static analysis result for SHA-256 7846d9102a679b54…

MALICIOUS

PDF

42.7 KB Created: 2021-05-10 19:10:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 34deb803bd3e0e589fae14172b747343 SHA-1: 76d0c2a6ec947a2d0ad6226ba15edd6a5c662216 SHA-256: 7846d9102a679b5483bab1300367f97e4bd9b8ca851801eb5a34abac97091111
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 0.9971

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-hack-ios-2021-game-hack PDF link annotation
    • http://paro.net.ua/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/blox-rewards_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/easypoints-gg-roblox_GM431946152.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_off00004b5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B5E 24888 bytes
SHA-256: d9da849a7ebb5104ffa9452b29925128a512cbd9631e92904d306de91b4525ea
font_01_sfnt_off000084e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E0 18116 bytes
SHA-256: 663054a01704a270a88e5c65db4cbe82af3fd3dd58587b1cb05b092ffe619ba9