Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab96c07375fe77b4…

MALICIOUS

PDF

6.4 KB
MD5: b1990f1dafc4537ff78ee71d2594c36a SHA-1: 2307090fefede507a52db747c0d2534abf05cfdf SHA-256: ab96c07375fe77b4d84278a9dc3dbea83750103eee71bde3092599ab2d77c30f
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection of 'Pdf.Exploit.Agent-13972' strongly suggests a known PDF exploit. The embedded JavaScript is likely responsible for triggering the exploit, potentially leading to the download and execution of a second-stage payload. The document body is unreadable, providing no further context on the lure.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-13972 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-13972
  • 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)
  • String.fromCharCode low PDF_FROMCHARCODE
    String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
  • 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 http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objstm_0024_00.bin
181fd29e7fc05ae748d31622b81e63330bb905843b104ce74dde566035772ea3		 pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 331 bytes

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