PDF malware analysis — malicious · c4e771062b99bb79

MALICIOUS

PDF

5.5 KB

MD5: f68fd90ccce0dd28881429e017ba2980 SHA-1: a8c8cf76564c44e8bafd007691bfc1c525f83fce SHA-256: c4e771062b99bb7930281c5d507d9eb543c6a6c1ebfe6354da4099fa892edebf

188 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. Specifically, it contains an embedded script payload and an embedded file, which ClamAV identified as Pdf.Exploit.CVE_2010_0188-10. This indicates the document is designed to exploit a vulnerability, likely CVE-2010-0188, to execute a malicious payload. The embedded artifact 'embedded_file_obj0006.bin' is the likely second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

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
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_obj0006.bin` `cf615047320e32fd28c873150188e7892b890c794983f810b4fc1b2e53c96bc0`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x413	33505 bytes
Detection ClamAV: Pdf.Exploit.CVE_2010_0188-10 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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