Malicious PDF — malware analysis report

Static analysis result for SHA-256 f240026812910969…

MALICIOUS

PDF

10.5 KB
MD5: beae658e3f4d71ce711d7d925040dda4 SHA-1: 7dae2c6741c32b1078e0c2c0ecada55f78c6cdc1 SHA-256: f24002681291096980d9a796aeb45ae366b66e3d4d34eac933638be0625ba19f
78 Risk Score

Malware Insights

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

The PDF file contains embedded content, indicated by the PDF_EMBEDDED heuristic and the presence of an embedded artifact. The CLAMAV_DETECTION heuristic flags it as Heuristics.PDF.ObfuscatedNameObject, suggesting an attempt to hide malicious code. The XFA form heuristic may indicate a method for triggering the embedded content. The primary attack pattern involves delivering a malicious embedded file within a PDF document.

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
8c2a426985333c30abef601c6b1a540927648640944d560390ed44dbcfeb7c23
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x7E 13408 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).