Malicious PDF — malware analysis report

Static analysis result for SHA-256 59cbd982ad52abcb…

MALICIOUS

PDF

3.3 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0
MD5: 3ddae5b17a43e9d0e6b0cf7a09c39fb2 SHA-1: c66db1b813a725cd0bf263a4656391b884db70d9 SHA-256: 59cbd982ad52abcb24b2e2d43c7ea82d794eb733d4002faea23cab09fc760535
100 Risk Score

Malware Insights

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

The critical heuristic firing indicates exploitation of CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms. This exploit is designed to achieve arbitrary code execution. The presence of embedded JavaScript and an embedded file further supports the likelihood of a multi-stage attack, where the initial exploit likely leads to the download and execution of additional malicious content. The PDF structure and embedded JavaScript suggest a common delivery method for exploits targeting older PDF readers.

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
6aa63d7bdfbe9449b7deb08496c5f44a4692ec5d481a3e9b14b0491107ee8c52		 pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1C6 35879 bytes

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