PDF malware analysis — malicious · 3ffc73b42ca0e101

MALICIOUS

PDF

3.4 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0

MD5: 28a7b7b0f3f3b005bea49fe4566397c6 SHA-1: 39c9a51f3e30457a7c9d1e634fabde327e8b2bee SHA-256: 3ffc73b42ca0e101866d5c166b08aae8a2177dd6f28605a46b9ec4c24a8ca224

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 related to XFA forms. This suggests the PDF is designed to execute code upon opening. While no specific script was extracted, the presence of JavaScript actions and embedded files points towards a downloader or exploit dropper mechanism. The embedded file, 'embedded_file_obj0004.bin', is likely 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.

Filename	Kind	Source	Size
`embedded_file_obj0004.bin` `a76974986959b0a1f1afa23787d0894e4d3371c4fc3873e93cd426380398e97a`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0x1C6	35879 bytes

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