Malicious PDF — malware analysis report

Static analysis result for SHA-256 d42a3cb473015b3c…

MALICIOUS

PDF

14.6 KB
MD5: 7c3a4fe634554972847cf37851dc0459 SHA-1: 84fabfb0117d4095868282e7756098782c668d14 SHA-256: d42a3cb473015b3cde9075879c77edfb4089cb22ef7a3d0b937d260921460932
148 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and triggers critical heuristics related to PDF exploits and dropped artifacts. ClamAV detections indicate it is a known exploit. The embedded URL is likely part of the exploit chain or a lure. The presence of XFA forms is also noted.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000329.bin
e95c6534dc5edad069ed2494c4b9ab4d8bc9215ad73129ec59c2546546519f92
pdf-embedded-script PDF raw stream script payload at offset 0x329 14266 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36809
Obfuscation or payload: unlikely