PDF malware analysis — malicious · 3dbb2323af47592a

MALICIOUS

PDF

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

MD5: 0f2d231bd11db47053783408a302f644 SHA-1: 64a03c01f22b88ea260622da00d7e329118df37c SHA-256: 3dbb2323af47592ae5ee9733e151bd681fd7fa68869f333e5e97b4931ca388fd

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The file is a PDF document flagged by ClamAV as Pdf.Exploit.Agent-36874, indicating it contains an exploit. The ML classifier also strongly flagged it as malicious. The presence of an XFA form and an AcroForm button with an action trigger suggests an attempt to interact with the user or trigger an exploit. No scripts were extracted, but the PDF structure and high detection scores point to a malicious exploit delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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` `83fdc9ebe0f266648a78f27b89df49b9724aa197a59e04b10679b41c6abb3850`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1453 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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