PDF malware analysis — malicious · b1b6365963860c75

MALICIOUS

PDF

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

MD5: 1ad3d992db2e1a22fb632b2fae77986d SHA-1: f0aa9ae7a3f5edc459a89837b3b512bf05680729 SHA-256: b1b6365963860c7591f5ed591770549ee0bb19f7eac272bb49db1c8c29775cbe

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 strongly indicate malicious intent. The PDF contains embedded files and scripts, suggesting it's a dropper or exploit document. The embedded script payload is a key indicator of the attack vector, likely leading to the download and execution of a second-stage payload.

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` `6acdc2d792c8bcd1ba39261b498b0a88c98d577e8f38847158e43133791a5c55`	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 0x717	199 bytes
`embedded_file_obj0010.bin` `33ed4ccc53b574bef10f16443b711206b6b043a90f34e0814bc83ed400be8801`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x80E	10429 bytes
`embedded_file_obj0011.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x115F	77 bytes
`embedded_file_obj0012.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x120A	56 bytes

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