PDF malware analysis — malicious · 3bbf64f9ef0db1f4

MALICIOUS

PDF

14.6 KB Created: 2010-08-29 16:19:36 Authoring application: UgegijojUto ApyQybyvawac

MD5: 041ed97272d5a7bea18fe606283296de SHA-1: 0aec8973c79358b147ebe52dcb7bb32f8f110baf SHA-256: 3bbf64f9ef0db1f47332f242042a4aff03e66ad3ef53cea419f21ff391df8284

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.002 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter

The PDF was flagged by multiple high-severity heuristics, including PDF_XFA_SCRIPT and ML_NYX_PDF_MALICIOUS, and detected by ClamAV as Pdf.Exploit.Dropped-81. The presence of embedded script payloads within XFA forms strongly suggests an attempt to execute malicious code upon opening the document. The embedded URL, though benign, is often used in conjunction with malicious PDF lures.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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 0x19E	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x24D	228 bytes
`embedded_file_obj0010.bin` `6acb8a08b51ab2a393a7c9925fbc1941b01c01b442ae4ea5c5fceec55bb9f1f0`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x340	1684 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x6D8	199 bytes
`embedded_file_obj0012.bin` `dd813a292c332c21b97fda3bd4b7c8413661be21a0e3778de60cb669bbf592c0`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x7CA	29175 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x3572	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x3619	56 bytes

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