PDF malware analysis — malicious · 9bdd93ca817fa340

MALICIOUS

PDF

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

MD5: 9fd4aba561b7681c1550deeb3e79009f SHA-1: b2555f8f785f5ed13f815c53efe9b1328efb841e SHA-256: 9bdd93ca817fa34048fed7ce1b594a5f5827d461d8cf489a034db8d5ddd39c17

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV and a machine learning classifier. The presence of an XFA form and an AcroForm button with an action trigger suggests exploitation of PDF vulnerabilities. The embedded artifact 'stream_001_off000008ed.bin' is likely the payload delivery mechanism.

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` `bd19ae904da36f4a98c7662dcf1a2f12b16242b52e9bbb83100f6f2fdd648213`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1459 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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