Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e98508305b8d598…

MALICIOUS

PDF

3.4 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0
MD5: aa12efabfe83af61085d69471c51d7d8 SHA-1: c4fb9074d345eaca59425814817615fb1173da29 SHA-256: 9e98508305b8d5980489755f56b26b347e3296449cd27657e3200233485fcfd6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing indicates exploitation of CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms and TIFF images. This exploit is designed to achieve code execution. The presence of embedded JavaScript and an embedded file further supports the likelihood of a multi-stage attack where the initial PDF serves as a dropper for 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
df00ffcff046fa8621860731410db7ffca2e469f663466b8178a5896886ce43e
pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1C6 35879 bytes