PDF malware analysis — malicious · c3e0365f64295010

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6

MD5: f10386d91e19adaae065680909acc03c SHA-1: 4a08c16b76b24cf1476de46969753b908023a7d8 SHA-256: c3e0365f642950106e0a5f16163bb4943e770641298a04b87763564df736cf8a

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically identifying it as 'Pdf.Exploit.Agent-36874'. The presence of XFA forms and AcroForm buttons suggests an attempt to leverage PDF features for exploitation. The extracted artifact 'stream_001_off000008ed.bin' likely contains the exploit code or payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36874 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36874
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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
`stream_001_off000008ed.bin` `cb4a19c66a863ec60011e0d445e27f29a10f972d6e5737d2293a9739b785e8bf`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1411 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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