PDF malware analysis — malicious · 1e37180e2e61cc58

MALICIOUS

PDF

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

MD5: a88315e7bbe742f58fdefda56c86b59b SHA-1: 7832ae3f7b38abe0b061ce565a15ba1473e2cb0c SHA-256: 1e37180e2e61cc58655cc30c2105e02f17ebcdd5a6aec198af6464fff3b23bde

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically detecting it as 'Pdf.Exploit.Agent-36874'. The presence of an XFA form and an AcroForm button with an action trigger suggests an attempt to exploit a PDF vulnerability. An embedded, decompressed stream artifact was also identified, likely containing the 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` `25db847bab5b5ec07f802bfd1cb3684c2e67534f7bd0a10f74741edc9f53002d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1414 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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