Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6448a5392a77e09…

MALICIOUS

PDF

27.8 KB
MD5: 45aa7a42433d8532347f27c9c218a877 SHA-1: bea279f6d17ece9eabf31e5c2063473d63159f03 SHA-256: b6448a5392a77e09529dae74a88d1f9ef2caab3e96e01d919f9759714f33eb00
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded objects and triggers heuristics related to XFA forms and unescape calls, indicating an attempt to exploit vulnerabilities. The presence of an embedded script payload suggests the file is designed to download and execute a second-stage payload. The embedded file 'embedded_file_obj0001.bin' is likely the delivered payload.

Heuristics 7

  • 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.
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0002.bin
0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712		 pdf-embedded-file PDF EmbeddedFile object 2 at offset 0xCA 46 bytes
embedded_file_obj0008.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x153 228 bytes
embedded_file_obj0001.bin
835b2802aaa34c15979a9995e4a7bc0eaa6b4ad7c59e7996e0cbc512d93b8189		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x529 26534 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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