Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4487e17b82410b9…

MALICIOUS

PDF

37.1 KB Created: 2021-05-24 20:02:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6d4840754a5b3bee8d4eb630844e13de SHA-1: a1e3e6ea04383864c31e3ecd3703d18e8bb3b736 SHA-256: a4487e17b82410b9f51ae36baf82d4040b320e2dad7e66ef65fad74b2d0b1469
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that mimic a lure for free Robux, a popular in-game currency. The primary link, 'https://netcdn.xyz/app/431946152/robux-match.com-free-robux-game-hack', is flagged as malicious redirector infrastructure. The document body also contains multiple URLs pointing to potentially malicious PDF files hosted on 'greenpasturesfarm.com.au'. The presence of a download button lure and the ML classifier's high confidence score further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/robux-match.com-free-robux-game-hack In PDF document text
    • http://greenpasturesfarm.com.au/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-free-robux-hack_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
font_00_sfnt_off00002f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 27956 bytes
SHA-256: cc962985d5758090214df38c55559c5f55ec204499d204c27a2e2427631f49a2
font_01_sfnt_off00006e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 18904 bytes
SHA-256: 4a85ad6ffc73ad9b3f41fceca22de32e3ce7595015d69f53ae753139e52ac9f7

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