Malicious PDF — malware analysis report

Static analysis result for SHA-256 a437fcf039e06c87…

MALICIOUS

PDF

38.7 KB Created: 2021-05-15 22:54:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a67c7b9f628b544011dbeca52b7d109e SHA-1: 7baf864182e15aa5638cbabd6f5fa8cd4d28ba80 SHA-256: a437fcf039e06c875be8b75fc57ab3d9a425043246719ea706206b0b3d8b0043
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a heuristic firing for a malicious redirector link pointing to 'https://netcdn.xyz/app/479516143/wurst-1.15-game-hack'. Additionally, a visual download button lure was detected, suggesting a social engineering attempt to trick the user into downloading a payload. The document body and title also contain references to 'Wurst 1.15' and a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/479516143/wurst-1.15-game-hack In PDF document text
    • https://www.youtIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3499 25224 bytes
SHA-256: 9acfc26de7c82d537234bd6a23f7bd7ca0bc2bf4efcbf314c63787e1181ad1af
font_01_sfnt_off00006d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1F 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000770a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770A 17864 bytes
SHA-256: b01281eee8ee309b19ac183d03e96fd9339da1edaab490a987cdf3c31f651974

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