Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8aa142b0329cbd…

MALICIOUS

PDF

12.4 KB Created: 2010-08-01 04:20:19 Authoring application: daceWis muleDoc
MD5: 9c4178f0719c00c7260c6aed14c5dc00 SHA-1: 97c0d2e2cf01273001611a5917d16d096dbacda2 SHA-256: ee8aa142b0329cbd2349dc08dd3b95f88994bc18eefdff3c0ea90b91b2a62cb1
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file exhibits multiple indicators of malicious intent, including embedded files and scripts. The ML classifier strongly flagged this PDF as malicious. The presence of embedded files, particularly a large one (obj0012.bin), indicates a potential payload delivery mechanism. While no specific script content was readable, the heuristic 'PDF_EMBEDDED_SCRIPT_PAYLOAD' confirms the presence of executable code within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x17AB 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x185C 228 bytes
embedded_file_obj0010.bin
84b6f6afc4c048c4ca555f67d90824c82221a8356fd8368d7bce3556f70e4584		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x194D 1127 bytes
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x1C14 199 bytes
embedded_file_obj0012.bin
774d0ff878877fa5ebe0dde57a1cbcced85063a3d42d4ab06e033e590a416230		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x1D07 54876 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x2ADC 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x2B83 56 bytes

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