PDF malware analysis — malicious · c05c0b92888e4029

MALICIOUS

PDF

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

MD5: 34ef41184c1baf9410ea2c97b348010f SHA-1: f63aaa2896599adaec44d04b9999b71b6a3535e6 SHA-256: c05c0b92888e4029aef068c814c602fcb176674787d3b899f45ff8ac8df5a26c

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The critical ClamAV detection and high ML classifier score strongly indicate malicious intent. The PDF contains an XFA form and an AcroForm button with an action trigger, common elements in exploit-laden PDFs. The embedded artifact 'stream_001_off000008ed.bin' is likely the exploit code. The document body text is obfuscated and does not provide clear user-facing lures.

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` `857d306e4c47ec976e0bac8db79b4ded59475c1c13d5f1ab23ea23ad4c31902a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1425 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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