PDF malware analysis — malicious · d47b6dc753cba9df

MALICIOUS

PDF

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

MD5: f177d4c912dcbc40e007459044807997 SHA-1: 5ec283cfffd3d0a3c8d46a70f24dc9d793583045 SHA-256: d47b6dc753cba9dfe2f57082075a64df955f647339ed27b85be904ccf585f2b4

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Exploit.Agent-36874, and an ML classifier assigned a high probability of maliciousness. The presence of XFA forms and AcroForm buttons are common in malicious PDFs designed to exploit vulnerabilities. No document body text was available for analysis, but the heuristics strongly indicate a PDF exploit.

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` `f41ad9a7bd979e19279076284b47a10dceeab6bb0e5bb323e4329d5d05f3f32b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1443 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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