PDF malware analysis — malicious · 8e3ce0182f7aa90d

MALICIOUS

PDF

12.2 KB Created: 2010-09-20 12:10:36 Authoring application: all sue

MD5: 4ad458a6e43a3101ea8a8002e0e74a3c SHA-1: 32942650cfbd81d54d3c3f94c35e3586ffc3a2f3 SHA-256: 8e3ce0182f7aa90df100e7eed5efd6eb8a3e5057222dbe3d0e14d7e70bc2cd50

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.007 Command and Scripting Interpreter: JavaScript

The PDF sample contains critical XFA JavaScript heap-spray exploit code. This indicates the document is designed to trigger a vulnerability in the PDF reader, leading to arbitrary code execution. The presence of embedded files, particularly 'embedded_file_obj0002.bin', suggests it acts as a dropper for a secondary payload. The unescape() call and XFA form scripting further support the exploit vector.

Heuristics 7

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.
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_obj0003.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0xC0A	84 bytes
`embedded_file_obj0001.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0xCBB	228 bytes
`embedded_file_obj0016.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xDAC	199 bytes
`embedded_file_obj0006.bin` `41fe2e34ed87721824c0e26fe0217036fe12a6d3244b89da0bbdf3b071fe905c`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0xE9C	119 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0xF54	77 bytes
`embedded_file_obj0009.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0xFFA	56 bytes
`embedded_file_obj0002.bin` `0449b74642d11aa0796c324e17aea1293a3d01d538bd338e2233224289a14278`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0x1332	11057 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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