Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a8aebaff3bc11c…

MALICIOUS

PDF

3.3 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0
MD5: dade9ecf0a9f42864cb4d3a4f21dbbc6 SHA-1: c65c2dcb2bbae37e0ed91ea773e85301e4c0d013 SHA-256: c3a8aebaff3bc11ccf71e6cadb9df5d29d053d56ea4e6c18f645d59155fce504
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains embedded JavaScript and an XFA form, which are commonly used to deliver exploits. Specifically, the critical heuristic firing indicates a match for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This suggests the document is designed to leverage this vulnerability to execute malicious code upon opening.

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • 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
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0004.bin
41185840329913a1e2d1b1ec2c204f916ecf7ec351a77443853b881f4ce95bec
pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1C6 35879 bytes