PDF malware analysis — malicious · 947e7a44337648be

MALICIOUS

PDF

12.0 KB Created: 2010-11-22 16:51:44 Authoring application: pee bib

MD5: 7c44049060f3c1669f28d130b6efe5e0 SHA-1: e836787f39d1b3a1d9dda2747b51155f7bb9e59b SHA-256: 947e7a44337648beb4b1934c04b7aa28557dcee3f7062e2f5cd9ef63728ae618

238 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059 Command and Scripting Interpreter T1059.007 JavaScript

The PDF file contains critical XFA JavaScript heap-spray exploit code and an embedded script payload. This indicates the file is designed to deliver a secondary payload. The ClamAV detection 'Pdf.Dropper.Agent-7283920-0' further confirms its malicious nature. No specific family could be identified, but the attack pattern is consistent with a dropper.

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-7283920-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7283920-0
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_obj0007.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xAA0	84 bytes
`embedded_file_obj0012.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0xB52	228 bytes
`embedded_file_obj0019.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 19 at offset 0xC43	199 bytes
`embedded_file_obj0018.bin` `9c0752be550aa4e459b729caaac4aa3707308f83c23d689856c0e6f6ab49ba85`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0xD34	119 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0xDEC	77 bytes
`embedded_file_obj0001.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0xE92	56 bytes
`embedded_file_obj0006.bin` `45169024feb653ca4bd6349f2c93ce942fd72afd6478e73d2bafbe3edcffd296`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x11CB	11320 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).

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