PDF malware analysis — malicious · f970ebdfcfaf3a9a

MALICIOUS

PDF

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

MD5: b3112a46583fabc96f493c21bae11e05 SHA-1: f0881b3fb57fdbaa4bb458329e6442be22bcc9ab SHA-256: f970ebdfcfaf3a9a530a6b16a68071c45700ba40f7e303e774e7cedd99a5a466

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, which identified it as 'Pdf.Exploit.Agent-36874'. The presence of XFA forms and AcroForm buttons suggests an attempt to trigger an exploit. The ML classifier's high confidence score further supports the malicious nature of the document.

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` `6fcbf8f6d825d6aeec22429683872568279c6d01e42eadff4430d4393b1f546c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1467 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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