PDF malware analysis — malicious · d84406e53a51f995

MALICIOUS

PDF

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

MD5: 909e954d5c8ff4e4847160be9bb4dabd SHA-1: 9a00da6a949d3c74d007d6d1a534e97e0ecaf4ae SHA-256: d84406e53a51f995dbc3be90c9dba599fbd0dcf38ddbcdb33ee3ea7a48c442df

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF document was identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36874. Static analysis revealed the presence of an XFA form and an AcroForm button with an action trigger, indicating potential exploitability. A suspicious, long encoded blob was also extracted, suggesting the delivery of a second-stage payload.

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` `4b4ebc67038e746962a18074ae4b0478b84bff7cea6443d912f8a010e63cc24d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1497 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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