PDF malware analysis — malicious · fedbc3e847c81b8e

MALICIOUS

PDF

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

MD5: 7857077e33b95415cd3d5c6c067f107e SHA-1: 925bfae65121e33ac35c8c76303e93169c581898 SHA-256: fedbc3e847c81b8e7a6984abb57bb3db9a6ee9aafa55af3067d25dc80dc3d6db

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file was detected by ClamAV as Pdf.Exploit.Agent-36874, indicating a known exploit. The presence of XFA forms and AcroForm buttons with action triggers further suggests malicious intent. The embedded artifact 'stream_001_off000008ed.bin' likely contains the exploit code. The document body text is obfuscated and does not provide clear user-facing content, reinforcing the likelihood of an exploit-driven attack.

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` `d3c9180c2c1b6ced5fe5cc419c54db56a7eb00054f45de6a1d5a08d9c805c238`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1436 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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