Malicious PDF — malware analysis report

Static analysis result for SHA-256 80adad1015ba5a2a…

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6
MD5: 1f389ed73e886d004732edb7ad407bad SHA-1: 57721011c35e9461c23d53ad303cdc085c18222c SHA-256: 80adad1015ba5a2a4da00ca2f9c936573e025ceb73fe87a8aeaa0eec42a833fd
108 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is a PDF document identified as malicious by ClamAV (Pdf.Exploit.Agent-36874) and a machine learning classifier. It contains an XFA form and an AcroForm button with an action trigger, suggesting it is designed to exploit a PDF vulnerability. An embedded artifact was also flagged as suspicious. The exact nature of the exploit and payload is not detailed in the provided evidence, but the overall pattern indicates a malicious PDF designed for exploitation.

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.

FilenameKindSourceSize
stream_001_off000008ed.bin
d794c1ddb5288521f71bac8cb64ef43895874d235805437cc7b89529896647ca
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ED 1417 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).