Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5f9617d6b7a89f…

MALICIOUS

PDF

3.5 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0
MD5: 41d9035b29c787c48e6a2ce30ac814eb SHA-1: e7a2255dcf9fe708f740c4a8971852c6ef87f8cc SHA-256: 1e5f9617d6b7a89f01b48b836f683259a08a0432cf64c369fac350b1de3111e3
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 is exploited by CVE-2010-0188. This vulnerability allows for client-side execution, likely to download and execute a second-stage payload. The embedded file artifact further suggests the delivery of additional malicious content.

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
2a6e4f06ee227325f4f536539ba63ed4330b8db6f84b31b28bce5d698ad796cf		 pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1C6 35879 bytes

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