Malicious PDF — malware analysis report

Static analysis result for SHA-256 b125d6f6a03354a3…

MALICIOUS

PDF

3.4 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0
MD5: 6bfcfe81dffe9a6bba97d74a71f07236 SHA-1: f3ddad3845f358d5fe2ba4ecf2608a9456a22bd7 SHA-256: b125d6f6a03354a32f52bd8738351eb0e3bc1b53769c42feec48f53f4635a9a7
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and an XFA form, which are commonly used to deliver exploits. A critical heuristic firing identified the CVE-2010-0188 exploit targeting Adobe Reader's XFA image handling. This indicates the file is designed to leverage this specific vulnerability for initial code execution.

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
33f9be6002f612de2b98867f55485197ba65f7e75c8c2539264ab155548803c9		 pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1C6 35879 bytes

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