PDF malware analysis — malicious · dd9cfd88992cba68

MALICIOUS

PDF

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

MD5: fbbd8ec62f4a31dc942399316abc9a61 SHA-1: ddacc63f78df20b59c7e1b9a5d197335b3a5eac4 SHA-256: dd9cfd88992cba68c7c0435a02bf38ee6d2e5e1675f2c56b29738a53fd80540a

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 vectors for exploit delivery. The embedded artifact 'stream_001_off000008ed.bin' is likely the exploit 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` `dba9f9a42a71b63c6f27ad3a6cc1f623d9b72389c269a016a6c0fe52d8e7eba0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1457 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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