PDF malware analysis — malicious · b76b9e23cb2d6d0d

MALICIOUS

PDF

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

MD5: 32308af7f7a0976cf3a1f558921f2e15 SHA-1: e97a759fa18a9809e1ccb252c1d7290b1f87886e SHA-256: b76b9e23cb2d6d0dc4dfcdbc5332f28887528f54dfb881e0bbe87f57ae6a8a32

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document identified as malicious by ML classification and ClamAV with the signature 'Pdf.Exploit.Agent-36874'. The presence of an XFA form and an AcroForm button with an action trigger suggests an attempt to exploit PDF vulnerabilities. An embedded, decompressed stream artifact was also detected, further indicating malicious intent.

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` `c9f0f751fe58b44d13cab7da18f0846d2e41c63c70d8b17d4fcc268fb6bee16d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1411 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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