Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fcb9d7cd517e43e…

MALICIOUS

PDF

66.2 KB Created: 2011-04-19 14:23:41 +08:00 Authoring application: Acrobat PDFMaker 9.0 Word 版 (via Acrobat Distiller 9.0.0 (Windows))
MD5: 88e825f18af55cc91411bc3b843bbe2f SHA-1: 49628af844cf2295915133df0853a15ad18ff50f SHA-256: 7fcb9d7cd517e43ebee8bf2d4a5206c7a6f1828d273e6934d6df44469863ce58
144 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a Flash object, both of which are commonly used to exploit vulnerabilities and deliver malicious content. The critical ClamAV heuristic 'Heuristics.PDF.ObfuscatedNameObject' and the presence of embedded files strongly suggest malicious intent. The embedded JavaScript stream, named 'javascript_obj0027_000.js', is likely responsible for executing the malicious payload, potentially downloading additional malware or redirecting the user to a malicious site.

Heuristics 7

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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/pdf/1.3/
    • 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/pdfx/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
8.swf
dc93ef64ed318ccd7577bb40b4a4165abbacfac317cb1de691c7402c1209399b		 pdf-embedded-file PDF EmbeddedFile object 37 at offset 0xDBE9 2557 bytes
javascript_obj0027_000.js
85645c63c4aad8310641e67c807bfe889e40959a161aa2fdbf9e5d83fcaaf7ee		 pdf-javascript-stream PDF /JS object 27 at offset 0xC86A 3385 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.