PDF malware analysis — malicious · 1df7f2cdf93cf003

MALICIOUS

PDF

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

MD5: 10b6da1ff67c1b4dec7eea2ffb644a30 SHA-1: d76dbcc6bb486376e7772b0ba07b62d73e228ccf SHA-256: 1df7f2cdf93cf003a384a6a032bca32eb171d2546ae35698197e4744ca0b01ad

166 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a PDF document identified as malicious by multiple heuristics, including ML classification and ClamAV detection (Pdf.Exploit.Dropped-81). It contains embedded script payloads and XFA forms, indicating an attempt to exploit vulnerabilities within the PDF reader. The presence of embedded files suggests it's designed to drop or execute further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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` `6bb2878bf92c270f4a08310726cd66b2ac0f9f39e232e6158099509fbebc1831`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x2E0	1347 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x610	199 bytes
`embedded_file_obj0012.bin` `c47942a84f070e4fdbcae9e5cbbb1311aadd5ef8517455a38981f0b3d96510d5`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x702	34056 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x417D	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4224	56 bytes

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