PDF malware analysis — malicious · 83165d39d4ab07f5

MALICIOUS

PDF

14.5 KB Created: 2010-09-15 07:26:41 Authoring application: tie dit

MD5: a9f147afe1c70e71c35cf8897e4edc87 SHA-1: 702cbbda6ffdebae1dba3aa4cf4eb10bcdcb544f SHA-256: 83165d39d4ab07f5258cc4984c6ef7f50d015c7a33db8b85eea9a71086e5eedb

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains critical XFA heap spray exploit code, indicated by multiple heuristic firings including PDF_XFA_HEAP_SPRAY and PDF_XFA_SCRIPT. This suggests the document is designed to exploit a vulnerability in XFA forms to execute arbitrary code. An embedded file, embedded_file_obj0018.bin, was also extracted, likely serving as the payload. No specific family could be identified.

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_obj0002.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0xB91	84 bytes
`embedded_file_obj0011.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0xC43	228 bytes
`embedded_file_obj0012.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0xD34	199 bytes
`embedded_file_obj0006.bin` `ecf9aead153723198d377e26740c296eac95d6bf34fa838473e2efe06c7731aa`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0xE24	119 bytes
`embedded_file_obj0001.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0xEDB	77 bytes
`embedded_file_obj0019.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 19 at offset 0xF82	56 bytes
`embedded_file_obj0018.bin` `20c8052c5ae18fce8a48a5bb4a096e3f4c36049bc4a0ae2da2cb8b25cc6be114`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0x12C1	16156 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.