Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35fe60f35714071…

MALICIOUS

PDF

36.6 KB Created: 2021-05-23 18:36:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4cf24b17c8d262a5c1861fa1eae02d6e SHA-1: 0e66d4b4d117eb9a855d7d83aa691c802d935292 SHA-256: f35fe60f35714071c2dfefec14df33f9b575a1fafc809bb2315bc28ed79e5a51
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL related to free Robux. The document body also contains a call to action to access a Roblox generator, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

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/robuxlove-.net-free-robux-game-hack In PDF document text
    • http://casabea.de/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://casabea.de/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://casabea.de/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://casabea.de/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://casabea.de/images/how-to-get-free-robux-on-chromebook_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_002_off000032be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BE 25224 bytes
SHA-256: f6e12545800824b9afb6c374ca2a90655db211fc06809dd36fddfc835eccc904
font_01_sfnt_off00006d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D40 18372 bytes
SHA-256: 65db4e182113fd1a8aa6d8046ef53f92d54fa7b6a505b130f920b75136a01eb1

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