PDF malware analysis — malicious · d0a6b33d27d4cbd6

MALICIOUS

PDF

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

MD5: b37c724d67c56b03fc7712545f6b0bcd SHA-1: 180c669954a9c460d6435640596afb504cb3ee27 SHA-256: d0a6b33d27d4cbd6f0b4cff610a1488aae849ce1869cc87f31ab61decb3f43e8

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The PDF file contains embedded script payloads and is flagged by multiple heuristics, including PDF_XFA_SCRIPT and ML_NYX_PDF_MALICIOUS, indicating it is designed to exploit vulnerabilities. The ClamAV detection 'Pdf.Exploit.Dropped-81' strongly suggests it's a dropper for further malicious content. The embedded nature and script execution point towards an attack pattern focused on exploiting PDF viewer weaknesses to download and run 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 0x213	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x2C4	228 bytes
`embedded_file_obj0010.bin` `7f0922b155c09a15192ab4caeae22f473a851b138673a5a7cd7534afe4b6c3c5`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x3B7	1380 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x6EF	199 bytes
`embedded_file_obj0012.bin` `909aa353f8fcee6793f294487a71d13d9ac885476536d2fa077b9f158699c39a`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x7E1	34001 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x4243	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x42EA	56 bytes

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