PDF malware analysis — malicious · a50065179da385b3

MALICIOUS

PDF

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

MD5: 9c3f74f40295629da65028213fe2b7a2 SHA-1: d3680ad1288b2e828b00460b5516d498ebc2f1a4 SHA-256: a50065179da385b3e89179ec4849e86a592d948b0f500574f633389a415746c6

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as 'Pdf.Exploit.Agent-36874'. The presence of XFA forms and AcroForm buttons suggests an attempt to leverage interactive elements for exploitation. While no specific script was extracted, the overall indicators point to a PDF exploit designed to deliver a malicious payload.

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` `eaa9849362f3638bf2ac8028a6182fd0fcce1b61a44dac6cfc131bfb728d85db`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1439 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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