Malicious PDF — malware analysis report

Static analysis result for SHA-256 3188a1b89144b7ea…

MALICIOUS

PDF

10.4 KB
MD5: c7790cf3b92473ce1f2e5233dfcbbed3 SHA-1: 47c4376bd48f70c17a2c4e2d3c3c1079f2daa9a7 SHA-256: 3188a1b89144b7eab06ca15dc3e72524201db7fc8586ecd3729f89841a65e0d1
78 Risk Score

Malware Insights

MITRE ATT&CK
T1557 Adversary-Controlled Active Content

The PDF file was flagged by ClamAV with 'Heuristics.PDF.ObfuscatedNameObject', indicating a suspicious structure. Additionally, a PDF_EMBEDDED heuristic fired, identifying an embedded file named 'embedded_file_obj0001.bin'. This embedded file is the primary indicator of malicious intent, suggesting the document is a container for a secondary malicious payload.

Heuristics 4

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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_obj0001.bin
99907a3f391b7c66b6b3aeec353910370016a4a628afbba19125712ee3c03f05
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x80 13408 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).