Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e512af2d4bc9aec…

MALICIOUS

PDF

66.0 KB
MD5: 91b86f9bdb7b47f377fc670ba141e5f2 SHA-1: 4d2147980d301d5786b2c7c3f265d492aa808246 SHA-256: 1e512af2d4bc9aec5ead05d077c523a2eb88d29f58f96eab17f207c01e6dab54
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6598

Heuristics 5

  • Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 66 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off000101fa.js
e78b1c3aa44795ee57af05b32c4487bbb50f3c100e90668b91913123610a99cb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x101FA 2825 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).

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