Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3fe313d75d9e23…

MALICIOUS

PDF

42.7 KB Created: 2021-05-19 11:03:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 03af302ee7eb5a5176a4651125a5e6d6 SHA-1: 104d697e4da830f010a7644b5715237729eb46f0 SHA-256: fc3fe313d75d9e2300377768c34ae1adb8c5850030717a322bdc57f4afd252e4
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-free-spins-link-2021-today-game-hack PDF link annotation
    • http://ikig.ru/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://ikig.ru/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/appsmob-coin-master-hack_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_off00004ade.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADE 24476 bytes
SHA-256: 2865ea181763c9999712197ee5d2311f3f5af24097cfbb6d43c5f0410a3f27e4
font_01_sfnt_off000082e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E7 18812 bytes
SHA-256: 705c5903f824403b328e8e9dbd2ab52a650d097fc3c0d4bbd34be772086d041a