Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f61ee808de5e867…

MALICIOUS

PDF

7.3 KB Authoring application: Tooqimeqipigafara (via 01bb5Renizaxizo)
MD5: 4a5e450f7e5d15c5dd13d3fd28bf1ef0 SHA-1: 7010eacf2e9169deb218d8632d0a40929824098f SHA-256: 7f61ee808de5e8678b9a6979f1b934cc4895ec51310a47e99fd2c02fb1d508a9
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • Hex-obfuscated scripting name object critical PDF_OBFUSCATED_NAME_OBJECT
    A PDF name object that drives script execution (/JavaScript or /JS) is written with #XX hex escapes to hide it from string-based scanners — e.g. /J#61v#61S#63r#69p#74 decoding to /JavaScript. Legitimate PDF producers always write these names literally; hex-encoding an executable name is a deliberate evasion used by exploit-kit and dropper PDFs.
  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0010_000.js
b53e27bbdeba8c818850cc3826b3d643c06114ca0ccd161a827d53f8e26598c4		 pdf-javascript-stream PDF /JS object 10 at offset 0x130D 2214 bytes

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