Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b206b4d1dd34d5…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 10:31:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e1f45d3f1a28a6e93716c7978b59424f SHA-1: 08b3c6f2dc48ec76f9a8477ff59a1c6f55c0f468 SHA-256: 66b206b4d1dd34d5ec13b56083135b84aa672fedf4bcd48a0bffab89b870c347
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that link to external resources, many of which are presented as downloadable files related to game hacks. The heuristic firings indicate a link farm and a malicious ML classification, strongly suggesting the document is designed to redirect users to malicious content. The presence of a "download button" lure further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/hack-the-game-coin-master-game-hack PDF link annotation
    • http://goldwing-shop.ru/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/freerubux_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/rbx-sites_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-hack-unlimited-spins_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
font_00_sfnt_off00004b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B07 24772 bytes
SHA-256: 7abfe3769277e4dd629a5b33f5dc30f8cf16693a8ef251e59982801b826945de
font_01_sfnt_off000082ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CE 18144 bytes
SHA-256: 2f83051d17fae7824be312dca8a0683f54a2c939f925aee2db8065487592d47a