PDF malware analysis — malicious · d5842cb00cd7c560

MALICIOUS

PDF

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

MD5: afc764b041cda30448023bfa4f86808d SHA-1: c3107cff73529d43941656e3fbf7a13fc40abfb5 SHA-256: d5842cb00cd7c56064deecc4e0f174312859f0994717113017e0396112e6ad0f

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded scripts and is flagged by multiple heuristics, including ML classification and ClamAV, as malicious. The high-confidence firings indicate the presence of XFA forms with executable scripts and embedded payloads, strongly suggesting it's designed to exploit vulnerabilities and download further malicious content. The ClamAV detection name 'Pdf.Exploit.Dropped-81' further supports this.

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` `f37d81c1e7c03c9b58ccdfdfd8f8ecf550b1415efcdb531117372fe537eaa4ba`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x3B7	1374 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x6E9	199 bytes
`embedded_file_obj0012.bin` `3f56c5ce3791b16cb3eb9ce31591521815e9bb854791ec2d3e155c9013d3babd`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x7DB	34247 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x4263	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x430A	56 bytes

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