Malicious PDF — malware analysis report

Static analysis result for SHA-256 31c4de7a3bb04e35…

MALICIOUS

PDF

43.9 KB Created: 2021-05-13 12:24:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f220b644f27dc345c637cf1e79ae5be8 SHA-1: 00f2bebca1bc53f535de357aec5944d85f06cb00 SHA-256: 31c4de7a3bb04e3573cff50b5826121497cfa0c952634da406859cafafb177c2
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, disguised with a call-to-action phrase. The embedded URL 'https://netcdn.xyz/app/431946152/robuxglobal.com-game-hack' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0366

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/robuxglobal.com-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D0 40004 bytes
SHA-256: c5f99d0d28d8fdea27fca52f2d3531997b007c7df3f5bb6ba349ae8d7a557e57
font_01_sfnt_off0000898c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898C 18764 bytes
SHA-256: 59fb30c80e85498b2f7c5a4d05a5dec781d28c8684b6c7c45546c982bbf76575

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