PDF malware analysis — malicious · 8bcea0b7363d43b2

MALICIOUS

PDF

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

MD5: 200a7635c126fc5d88e5fe766b77f507 SHA-1: 6bab2ba9c2d6de0dc176d0dbf6e8cb5c07a35a8e SHA-256: 8bcea0b7363d43b2599e4c0d20334f734a87066e5d48bf9958017c34d5c0015e

168 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded executable scripts and is flagged by ML classifiers and ClamAV as malicious. The high-confidence heuristic 'PDF_XFA_SCRIPT' indicates the presence of risky executable script within an XFA form, a common vector for exploit delivery. The ClamAV detection 'Pdf.Exploit.Dropped-81' further confirms its malicious nature, suggesting it's designed to drop and execute 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 0x207	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x2B8	228 bytes
`embedded_file_obj0010.bin` `6941b5929e451edb235b387eddd47ff1fcd04dba89d62d38fb4e6323f4de99df`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x3AB	1358 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x6E4	199 bytes
`embedded_file_obj0012.bin` `481ebf76ae512472cf4f2cbde0986b76af63bf1cef9ee2b29e05deb3f1d4ed5b`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x7D6	34165 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x4251	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x42F8	56 bytes

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