PDF malware analysis — malicious · e2b9f4cf1fe6f685

MALICIOUS

PDF

12.7 KB Created: 2010-09-29 08:46:06 Authoring application: vav bye

MD5: 521e4e39d683bddfa7f7d35e8bd8a9af SHA-1: 2ced6da644996b2a6b187bf1947759f2358b637c SHA-256: e2b9f4cf1fe6f68525e7b3971aefdd004f7b7f921ad6c7963979b648b314e672

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains critical XFA heap spray exploit code, indicated by the PDF_XFA_HEAP_SPRAY heuristic. This exploit is designed to execute arbitrary code, likely to download and run a second-stage payload. The presence of embedded files, including a larger one named 'embedded_file_obj0014.bin', suggests this is a delivery mechanism for further malicious activity.

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_obj0018.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0xCEF	84 bytes
`embedded_file_obj0012.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0xDA1	228 bytes
`embedded_file_obj0017.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 17 at offset 0xE92	199 bytes
`embedded_file_obj0013.bin` `d08a63545ee77e2aa1b131bdd90299039ae6903725a59223ddf268d95e4de98a`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0xF83	119 bytes
`embedded_file_obj0010.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x103B	77 bytes
`embedded_file_obj0002.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0x10E1	56 bytes
`embedded_file_obj0014.bin` `0eff057c31beb8b5e815b1e3faa92509d61b26ac776bf83988447559685f785b`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x141C	11602 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.