PDF malware analysis — malicious · e4457d40bd240181

MALICIOUS

PDF

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

MD5: 8186c79f38013bc8941592908ea9d5bc SHA-1: 6497ce59b4aef49bb2061831488124ef0d4ae24d SHA-256: e4457d40bd240181e341193986dcf8f220de9c1387994accf08290c147ef8ea2

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. Static analysis revealed XFA form elements and an AcroForm button with an action trigger, which are common vectors for PDF exploits. The presence of a suspicious decompressed stream further supports the exploitation of a vulnerability within the PDF structure.

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` `c7157dd17ee64685f71abef87fb4e813ce2c638df80401096042e704a6cf6442`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1418 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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