Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbdade2a73bae993…

MALICIOUS

PDF

7.8 KB Created: 2012-04-06 19:15:32
MD5: 1179717376a76d9f3caca0f0898e6e6f SHA-1: f1a79c42d1c7991536abe85187f17f454e9a1f13 SHA-256: cbdade2a73bae99324156a4251f3bc63c67818d2a0294b948f90bd622276c670
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: Malicious PDF

The critical ClamAV detection and high ML classifier score strongly indicate malicious intent. The PDF contains an embedded script payload, which is a common technique for delivering exploits. The embedded file artifact further supports the delivery of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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
embedded_file_obj0010.bin
29a4ad3e4445aa2c759365f2f0cba1ac0827db934b37531fe2320d847aae2a05
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0xC8A 6990 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).