PDF malware analysis — malicious · c7f7e472c5b5bcb5

MALICIOUS

PDF

13.4 KB Created: 2010-09-07 21:42:21 Authoring application: ton roc

MD5: b6405c45528aafcbb6fa66c43e15d668 SHA-1: 702ec88f601d1213fb8c088f312d31e483f720e2 SHA-256: c7f7e472c5b5bcb5ece09bb27745adb7157d6f0e986252f489645a694ea36026

178 Risk Score

Malware Insights

The sample is a PDF file that contains XFA (XML Forms Architecture) data. Critical heuristics indicate the presence of XFA JavaScript heap-spray exploit code and risky executable script within an embedded stream. This suggests the PDF is designed to exploit a vulnerability, likely leading to the execution of a malicious payload. The embedded file 'embedded_file_obj0015.bin' is flagged as a suspicious extracted artifact, likely containing the secondary payload.

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_obj0008.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x7DA	84 bytes
`embedded_file_obj0016.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x88C	228 bytes
`embedded_file_obj0010.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x97D	199 bytes
`embedded_file_obj0014.bin` `ee9f380de6dd2f369557c02b1f1f456118520acd57fe986c106ae2e5745c2413`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0xA6E	119 bytes
`embedded_file_obj0006.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0xB24	77 bytes
`embedded_file_obj0007.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xBCA	56 bytes
`embedded_file_obj0015.bin` `bed8b0aecb084a88d9348d2fb29f70b8438ada9c1c94c4407cab0e7b7b9f1b21`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0xF02	15606 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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