Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4e54905233cc052…

MALICIOUS

PDF

44.1 KB Created: 2021-05-19 03:30:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4c4067151b63fa443e429320d4ef63ba SHA-1: b03da6c2c6a9a2cbe0d69554e4f358b967c8eb7f SHA-256: c4e54905233cc052b050934a8d69ebbd12791b4e193569e0c5192527514727af
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering free in-game currency or items. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites. The document's content and structure strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/coin-master-free-spins-link-2021-today-game-hack PDF link annotation
    • https://www.mvp.co.nz/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mvp.co.nz/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://www.mvp.co.nz/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mvp.co.nz/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://www.mvp.co.nz/images/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • https://www.mvp.co.nz/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://www.mvp.co.nz/images/coins-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.mvp.co.nz/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.mvp.co.nz/images/roblox-executor-free-download_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_off00004bb2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB2 25388 bytes
SHA-256: 7bb89644d0dbdc55e90c984980019d2559ab45cfacbce02e5887b31ee727ca88
font_01_sfnt_off00008561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8561 19784 bytes
SHA-256: 4d9a244dca2ea7985dd7fd870aa9c791c4b9b6b2ab3eabaeb1df5449f9add835

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