PDF malware analysis — malicious · 405bfc3a4c238630

MALICIOUS

PDF

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

MD5: 94f58420d83499177dbc2c78e3f0b0f9 SHA-1: 729605cdf3e0608a365fa90f89f156148054490b SHA-256: 405bfc3a4c238630dd90c595473da87c94cec41e59baddf6897b4e43d38fd97b

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell T1566.001 Spearphishing Attachment

The critical heuristic 'Pdf.Exploit.Dropped-81' and the 'PDF_XFA_SCRIPT' firing indicate that this PDF document contains and executes a malicious script. This script is likely responsible for downloading and executing a secondary payload, a common technique for initial access and further compromise. The presence of embedded files further supports the nature of this dropper.

Heuristics 6

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
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://ns.adobe.com/xdp/

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 0x13E	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x1ED	228 bytes
`embedded_file_obj0010.bin` `29020ce3fb41951b091b863d32cbd8b0f384d6c31e8ab4eb2d69bb25526a704d`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x2E0	1351 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x616	199 bytes
`embedded_file_obj0012.bin` `1bd2b30ef165c4ad678e0a225a7f5a045de1d3d32aeb8bb9a9ea1c2ca42e87ec`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x708	33948 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x412D	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x41D4	56 bytes

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