Malicious PDF — malware analysis report

Static analysis result for SHA-256 46917fc83432a1d1…

MALICIOUS

PDF

42.8 KB
MD5: 8708bc005b4a6a58ee2ce1b7ff9c0c0a SHA-1: 0cf7c1bb69b63bba14b655d46efaa758c0abaedf SHA-256: 46917fc83432a1d1e357c494f48ba55cca6d595da5c9ce8b293c41c8e5ae87c2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution

The file is a PDF document that contains embedded scripts and embedded files, as indicated by multiple PDF-specific heuristic firings. ClamAV detections for 'Pdf.Exploit.Agent-36834' on both the main file and an extracted artifact strongly suggest it is a malicious PDF exploiting a known vulnerability to deliver a payload. The document body content is heavily obfuscated and does not provide clear user-facing lures.

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36834 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36834
  • 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.
  • 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 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/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 67 bytes
embedded_file_obj0009.bin
e14183a1df718923df1b2436bc5f20856d48eb82939ec43b74ee740582a166f3		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 688 bytes
embedded_file_obj0010.bin
1870a8c90be73ebe36ae508f57c55ef58407515a4ad8c7e867914369cf2923c9		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x45D 99 bytes
embedded_file_obj0011.bin
0edfcccf7cf67c22a751dbc2e2755a0d5676f7a5679e180c451f2b423312adef		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x50B 585 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x79F 190 bytes
embedded_file_obj0014.bin
dbfcf86f9a21e1a7e2dc7a6d3a4e0dd5c1755db966e4b555ffa9dd7586fb16d3		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x8AA 40870 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36834
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA89A 68 bytes

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