PDF malware analysis — malicious · 8a5690c4dc36c856

MALICIOUS

PDF

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

MD5: 3c5d23a5820eaa9d07a7cf09c9ff2431 SHA-1: 0ec406ed1a0bb3d7d1bb98986bd22058e2627e5d SHA-256: 8a5690c4dc36c856147dc72cfa2318b09ca876dd628aaa3ac09b3b4694544745

160 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA images. The embedded artifact, detected by ClamAV as Win.Trojan.E-51, indicates the execution of a malicious payload. The PDF also contains JavaScript actions and embedded JS streams, suggesting an attempt to further obfuscate or deliver the exploit.

Heuristics 7

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.
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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` `0e60a55c722dd061a21ef34aee0b8c7a17ef5f6a394c931008aff3224aa998b7`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0x1C6	35879 bytes
Detection ClamAV: Win.Trojan.E-51 Obfuscation or payload: unlikely

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