Malicious PDF — malware analysis report

Static analysis result for SHA-256 951243a443aa4087…

MALICIOUS

PDF

42.9 KB
MD5: 6de9e471709809e9034420412f8e4727 SHA-1: a2df5eb2ba49d236d64c2774e00b9a3c9c4e07c1 SHA-256: 951243a443aa4087de269ba4e59617a10a449fdddfe04fcc767559e3b2b6116d
156 Risk Score

Malware Insights

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

The PDF document contains embedded files and scripts, triggering critical heuristics for embedded script payloads and ClamAV detections (Pdf.Exploit.Agent-36836). This indicates the document is designed to exploit vulnerabilities and deliver a malicious payload. The presence of XFA forms and embedded files further supports its role as a delivery mechanism.

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36836 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36836
  • 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://ns.adobe.com/xtd/
    • 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
6c36f0f4ebede54c4d9532983299f26f15e2c8ff6cc9844031e8bc0b996949ca		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 689 bytes
embedded_file_obj0010.bin
e1ab66598406464785df1b7c3e4218452dce39c816aca3e1a181e312cbe8a05c		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x45E 93 bytes
embedded_file_obj0011.bin
4387607adac5dfdb5044dea4cb44f807752dd9a3bc330b440d549602cb156146		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x506 525 bytes
embedded_file_obj0012.bin
6dfc2cfc739bf5cd5514e048143c782a1af7b4c86ed10bd88203471efa9b3fe7		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x75E 389 bytes
embedded_file_obj0014.bin
090db02598ab1e3dd4921532d7544a050f7b0a81a74f90bec5d9f2271430efdf		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x930 40788 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36836
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
51d6d76eddb1746e412f89f4d1c1b0d620c60fb4a5641c018e93871be63968a9		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA8CE 147 bytes

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