PDF malware analysis — malicious · 327469bf141a618f

MALICIOUS

PDF

13.1 KB Created: 2010-12-30 18:11:08 Authoring application: fin foy

MD5: 9052ec545ee00543b164943e882cac2d SHA-1: 38b860caca5b89ced2e850b22e3c9694aeb982d4 SHA-256: 327469bf141a618fc26d29529837cc962a048ef3611785d2d161063fe3e9ccaa

268 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

This PDF file exhibits critical heuristic firings related to XFA heap spraying and embedded script payloads, strongly indicating exploit code. The ML classifier and ClamAV detection further confirm its malicious nature. The primary attack vector appears to be an XFA form containing executable script designed to download and execute a secondary payload, as suggested by the 'Pdf.Dropper.Agent-7246693-0' ClamAV signature.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 8

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.
XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY

PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
ClamAV: Pdf.Dropper.Agent-7246693-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7246693-0
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0014.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0xEEB	84 bytes
`embedded_file_obj0017.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 17 at offset 0xF9D	228 bytes
`embedded_file_obj0005.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0x108D	199 bytes
`embedded_file_obj0018.bin` `25655b06b7245c48530fa7a0f200f2943acf5b0daacb6b5635c090e8603dfb1a`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0x117E	119 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x1236	77 bytes
`embedded_file_obj0006.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x12DC	56 bytes
`embedded_file_obj0008.bin` `ef1aa59ef1a18e3af7f582ad33dde56371e1c27cd1cbb8bb9fa0385f48eb4def`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x1613	11467 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.