PDF malware analysis — malicious · fa7e9252f34ad8c6

MALICIOUS

PDF

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

MD5: 86b9772a5dc2db5ba189020a0ea43dcc SHA-1: 44fb6c21cdee7f7f882641430b6a3cc21a004bf6 SHA-256: fa7e9252f34ad8c6c8e3eeb09de81b4deaafbaf996c68af7c12de17ca05dba65

78 Risk Score

Malware Insights

The critical ClamAV heuristic firing indicates this PDF is recognized as a known exploit, specifically 'Pdf.Exploit.Agent-36874'. The presence of an XFA form and an AcroForm button with an action trigger further supports the likelihood of an exploit being embedded within the document structure. The extracted file 'stream_001_off000008ed.bin' is also flagged as suspicious due to its size and encoding, suggesting it may contain the exploit 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` `13471458f1f7f0d28a69a7f2265d30c3c88f2f6609216b448d6f609277af6e55`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1432 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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