PDF malware analysis — malicious · b7ff3e1d51ea42a8

MALICIOUS

PDF

5.5 KB Created: sdtres

MD5: c9f7b3789ec07063c56d88cf68aff2a7 SHA-1: 20e3cd3690b4c4af0a6658763d7925728ad158f5 SHA-256: b7ff3e1d51ea42a89447d6ab4d02cf3ceb491a38cb5ba144ae68c83d8f2240a9

216 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 known vulnerability in Adobe Reader related to XFA forms and LibTIFF processing. Heuristic analysis confirms the presence of an embedded exploit payload and an embedded script payload. ClamAV detections further corroborate the malicious nature, specifically identifying it as Pdf.Exploit.CVE_2010_0188-10. The embedded file and script indicate a likely attempt to download and execute a second-stage payload.

Heuristics 6

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
ClamAV: Pdf.Exploit.CVE_2010_0188-10 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
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.
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0011.bin` `9a8064e98fe4b0c6514e1caf6812317a719fd3184f6dee45a432ba90ae849437`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x45F	33151 bytes
Detection ClamAV: Pdf.Exploit.CVE_2010_0188-10 Obfuscation or payload: unlikely

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