PDF malware analysis — malicious · c42fa89d12c20ff4

MALICIOUS

PDF

5.6 KB

MD5: 058d33b89db998bf48f0df9423443f31 SHA-1: 8f6c136e88ad07a8657b0af9d9b835847b4ac7a5 SHA-256: c42fa89d12c20ff4659c62a955abd9aa74641d7c580378ae00c4747435907933

188 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. Specifically, it contains an embedded script payload and is detected by ClamAV as Pdf.Exploit.CVE_2010_0188-10, indicating exploitation of a known PDF vulnerability. An embedded file, 'embedded_file_obj0006.bin', was also extracted and flagged by ClamAV with the same signature. The attack pattern involves leveraging this vulnerability to execute arbitrary code upon opening the PDF.

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` `b3eb77e32a64612e3f819f4a806f0dfac9498783b42c2f6ea8b4c4a7fe5cb3b5`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x412	33709 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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