PDF malware analysis — malicious · a8841b8021ac92db

MALICIOUS

PDF

5.5 KB

MD5: 9f7c54aea2d3545e03ca8c3b1349118e SHA-1: 3ce72d5d88f1740c79474dd0ad18aa6a086c9c69 SHA-256: a8841b8021ac92db423712a92258a46c8a5c441fa54e2b0315248e550ca6f7e4

188 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by multiple heuristics and ClamAV as malicious, specifically detecting the CVE-2010-0188 exploit. An embedded file was also extracted, which ClamAV also identified as malicious. The ML classifier assigned a very high probability of maliciousness. The attack pattern involves exploiting a known PDF vulnerability to execute a 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` `46771c56860883b36919b12c328f9191ba8e5f5609c4c63ed263fd3913c6bdbd`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x413	33672 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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