PDF malware analysis — malicious · d2957f3469edc499

MALICIOUS

PDF

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

MD5: 1d1a71482ba43db5b46781892f008bae SHA-1: 33fda9c80b52e5f78b10a5eaf7133a458dae02bd SHA-256: d2957f3469edc4992b7ec39f7ef6085831b9770123e1777a7ac622622cb30a2e

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded script payloads and is flagged by multiple heuristics, including ClamAV detection as Pdf.Exploit.Dropped-81. The ML classifier also strongly indicates maliciousness. The presence of embedded files and XFA forms suggests the document is designed to exploit vulnerabilities and download a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
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_obj0008.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x2C9	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x37A	228 bytes
`embedded_file_obj0010.bin` `e1259aa0cc56e50b5b9bb50b429640d9362f4b2edb59938059d30c714c3a3da5`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x46D	1486 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x7C7	199 bytes
`embedded_file_obj0012.bin` `183efdac41462cea806cdbc365a2a14f295dab6e97ec06ef41ede8f19a96eb8d`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x8B9	34251 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x4351	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x43F8	56 bytes

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