PDF malware analysis — malicious · f747499ce51db154

MALICIOUS

PDF

5.9 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap

MD5: 3972add741244f18de5e6c22c8e48560 SHA-1: c91ce15fc4c175fe592f3968eccf5888c4af7073 SHA-256: f747499ce51db15457bcf88a293f09e03603821a8979dd4e1778f86c6e075385

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The critical ClamAV detection and high ML classifier score indicate this PDF is malicious. The PDF contains embedded script payloads and embedded files, suggesting it's designed to exploit vulnerabilities and download further malicious content. The presence of embedded files and scripts points towards a dropper or exploit delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
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.

Filename	Kind	Source	Size
`embedded_file_obj0006.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x234	84 bytes
`embedded_file_obj0007.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x2E9	228 bytes
`embedded_file_obj0008.bin` `3e104dc15468b8c85d8e2a69f27dbfdd3c3ca52699d1ef2352ed54e35c0dc849`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x3DD	1267 bytes
`embedded_file_obj0009.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x718	199 bytes
`embedded_file_obj0010.bin` `0436e39da9782058e784bed6136da4afa2ab6298eccc6a195b986202178fdefa`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x80F	10395 bytes
`embedded_file_obj0011.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x1153	77 bytes
`embedded_file_obj0012.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x11FE	56 bytes

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