Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f21d9791229eb1e…

MALICIOUS

PDF

3.3 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0
MD5: e15849320db1a90d06aded8d00354d92 SHA-1: 58f4c526e644c15ad4fa173c6f8d3c5d60f0f5bf SHA-256: 4f21d9791229eb1eec323cbd1c66c4191b0dddd84d6283ceb4dddc3c42e303b3
100 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and is flagged as exploiting CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA images. This indicates the document is designed to execute arbitrary code upon opening. An embedded file was also detected, likely containing the secondary payload.

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
e39e44a7ae6176fdcffe0cca1dabfa4985d7673ec3a8dfdc710d93bf8b0543fc		 pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1C6 35879 bytes

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