PDF malware analysis — malicious · f9582b3c26ed675c

MALICIOUS

PDF

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

MD5: 6fb36ef7cbfb57360a882895dc7c1984 SHA-1: af13a4b6fd330bf8211f5b5b01be6d4eac7f7177 SHA-256: f9582b3c26ed675cc6558eb0658b926347218864f82ff98abd4a2cf95bf17aa6

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36874, indicating a known exploit. The presence of XFA forms and AcroForm buttons with action triggers further suggests the document is designed to exploit PDF viewer vulnerabilities. The extracted document body contains obfuscated text, likely part of the exploit mechanism.

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` `be9413dad27937922e1945aefbdabbff108589b92d5bc81b463e8bee4112ec53`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1446 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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