PDF malware analysis — malicious · b29f30081bd78439

MALICIOUS

PDF

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

MD5: 4aad2adf8b1d989c4661c1f1d3ca7251 SHA-1: 440b14697f2e5abf1135eb160e819c56f0569729 SHA-256: b29f30081bd784394544c73d67207d86d2b9e5f1c78929722937f43fcd2e24e7

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The critical heuristic 'CLAMAV_DETECTION: Pdf.Exploit.Dropped-81' and the high heuristic 'PDF_XFA_SCRIPT' indicate that this PDF file contains malicious XFA scripts. These scripts are designed to exploit vulnerabilities within PDF viewers, likely leading to the download and execution of a secondary payload, as suggested by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' firing. The embedded file artifacts further support the payload delivery mechanism.

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 0x207	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x2B8	228 bytes
`embedded_file_obj0010.bin` `6b36e0d6021018a0c59fefe67ea0c38764d64c7ec1e80cea32ef524ecf2aa88c`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x3AB	1361 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x6E4	199 bytes
`embedded_file_obj0012.bin` `8aab249445e277a5ab2d9e2e5e201785ca4d114dfac9c24e06a6166fe14350d4`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x7D6	34221 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x4280	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4327	56 bytes

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