PDF malware analysis — malicious · 2ab163ef3c1a6862

MALICIOUS

PDF

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

MD5: 0950f55ac190607ecf4259aa90b83391 SHA-1: 869a197a091d021fb5642f4428d86175a22ab694 SHA-256: 2ab163ef3c1a68621b4313d3c705c6d6822323579a38692b28d3eb93293e980a

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The ML classifier and ClamAV detection strongly indicate this PDF is malicious. The presence of an XFA form and an AcroForm button with an action trigger are common techniques used in PDF exploits. The embedded artifact 'stream_001_off000008ed.bin' likely contains the exploit code or 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` `0268ad2c946417b29f8098e6de8779fd8b4a1d2d984fcc54dbdc2d6c65ae725a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1429 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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