PDF malware analysis — malicious · e43e9c4d701bbf3b

MALICIOUS

PDF

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

MD5: 2247b50cd8496cfcc708cf761cd95997 SHA-1: 70fc1ce38b108fc51d8b60781c11df35d2da5f53 SHA-256: e43e9c4d701bbf3b529f76a5eaa1bf2222b7f5830886c2bfe2ae900b10bd769c

110 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The critical ClamAV detection and high ML classifier score strongly indicate malicious intent. The PDF contains XFA form elements and an AcroForm button with an action trigger, common vectors for exploit delivery. The embedded artifact, a decompressed PDF stream, likely contains the exploit code. The file is identified as Pdf.Exploit.Agent-36874 by ClamAV.

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` `bb739932cc66c57d9add7784d59f90bed15f6ef485cef32f324f52e77a0a9d3a`	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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