Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e208da97e3ba66f…

MALICIOUS

PDF

41.3 KB Created: 2013-10-09 16:18:28
MD5: 1b0c9031eca06eaadf4a218c02236850 SHA-1: 48fd68b98a7751cc647a567bd96f30b413363d38 SHA-256: 0e208da97e3ba66fa36abf88dc4bb83335b92a1521ebf11df59ad4c9857fa2bf
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as an exploit for CVE-2010-0188. An embedded script payload was detected, which likely attempts to download and execute a second-stage payload. The ClamAV detection on the main file and an extracted artifact further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.CVE_2010_0188-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0004.bin
6291056c4e0ecdc91c0b53c85a55f6e63f07de64011a9c10035d862c996dd7e2		 pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x445 40752 bytes
Detection
ClamAV: Pdf.Exploit.CVE_2010_0188-10
Obfuscation or payload: unlikely

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