Malicious PDF — malware analysis report

Static analysis result for SHA-256 48eb65e287a5c839…

MALICIOUS

PDF

23.7 KB
MD5: 4b52b3373a38f72507ac3b1d5e91e4d0 SHA-1: 1e3d1e02e91cdcc93e966d8dce3d941f3f92d87b SHA-256: 48eb65e287a5c839ad4f67f3fa4b3cd2b534af86d8af8058150fd8bb07f306c3
178 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded executable scripts and triggers high-severity heuristics related to XFA forms and eval() calls, indicating an exploit attempt. The ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms malicious intent. The embedded file 'embedded_file_obj0008.bin' is likely the dropped payload. The script's purpose is to execute arbitrary code, likely to download and run a second-stage malware.

Heuristics 8

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
32b987e9dafe0189cbd8f9844e3f667eb3b193dd6d87c2c19f3d0aeae3f9428e
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 23483 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).