Malicious PDF — malware analysis report

Static analysis result for SHA-256 0593ebcb83fedb44…

MALICIOUS

PDF

44.3 KB
MD5: 988e24a25a9a16c3bd19ea6c70603394 SHA-1: d028f452620e40af4179d8670fbdf73d1275e324 SHA-256: 0593ebcb83fedb44942d9e2f809b75ea4339ddda478e7f04ad620f17f6a4701d
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is identified as malicious by multiple high-confidence heuristics, including ML classification and ClamAV detection, specifically flagging it as Pdf.Exploit.Agent-36830. The presence of embedded scripts and embedded files within the PDF structure strongly suggests an exploit is being leveraged to achieve arbitrary code execution. The benign Adobe and XFA URLs do not indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • 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 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
  • Embedded script payload in PDF stream low 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 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/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD5 46 bytes
embedded_file_obj0009.bin
58481460d0e5b9442c3b8f27ae56f7aa3969be756775de0d79c8d445a871b6f0
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 689 bytes
embedded_file_obj0010.bin
69650a61091a018036679a3439cc6a018b6a91ebe9e0e3a6b36ceb04d6491a4f
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x449 160 bytes
embedded_file_obj0011.bin
29fdea5e9c8aa24a135e1a9041f3724e3d03f60ebf27c1f7335aa1bc49aefc8a
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x534 468 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x753 190 bytes
embedded_file_obj0014.bin
f912eaa3a5c3a10958e143c3f343944f6e2c81c45e07f8d521f926286e054844
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x85E 42503 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely