PDF malware analysis — malicious · 98d963bac6bee9f6

MALICIOUS

PDF

4.7 KB

MD5: 9ee5bec68917fcb8de1d9e2a95f8685e SHA-1: da1098aa3b1c77e39c37c709ee08c5c4f985c5cd SHA-256: 98d963bac6bee9f6943f0cb52319b2f4c1f29e9a8732899763639b28e4ea6408

226 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains a critical heuristic firing for CVE-2010-0188, indicating it exploits a vulnerability in Adobe Reader related to LibTIFF XFA images. This exploit is designed to execute arbitrary code. An embedded file, 'embedded_file_obj0001.bin', was also extracted and flagged as suspicious by ClamAV, suggesting it is likely a secondary payload. The PDF structure also shows indicators of encoding filters commonly used in exploit delivery.

Heuristics 8

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: Pdf.Exploit.Pidief-3 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Pidief-3
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.
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `cee0e7155b1feb54fa0b69b80ba65b46ff79ee22cb4f4610bc0cac5b79b6fe6a`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x7A	13441 bytes
Detection ClamAV: Pdf.Exploit.Pidief-3 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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