PDF malware analysis — malicious · f68ae753f13f65b5

MALICIOUS

PDF

14.7 KB Created: 2010-09-18 05:55:51 Authoring application: sop pye

MD5: 87aca6529988bda3da066a38fb6e63ce SHA-1: 0189496f0e71278965c6152d5b3b314a07d215b2 SHA-256: f68ae753f13f65b57a5b7bd05ab348fccc4cbe092745adefa5c332a594e8c292

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.007 JavaScript

The PDF sample contains critical heuristic firings indicating an XFA heap spray exploit. This suggests the document is designed to leverage JavaScript within XFA forms to execute arbitrary code. The embedded file 'embedded_file_obj0011.bin' is likely the payload. The exploit targets PDF viewers, aiming to compromise the user's system.

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_obj0007.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xB9F	84 bytes
`embedded_file_obj0010.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0xC51	228 bytes
`embedded_file_obj0015.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0xD42	199 bytes
`embedded_file_obj0019.bin` `681a8b0f1fe6e89465a9e917fe58866e6093777fc155522d9945c0c4841f5c40`	pdf-embedded-file	PDF EmbeddedFile object 19 at offset 0xE33	119 bytes
`embedded_file_obj0017.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 17 at offset 0xEEA	77 bytes
`embedded_file_obj0006.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0xF90	56 bytes
`embedded_file_obj0011.bin` `a5b95b6797487260f4b0f92008aee088c6fda2e2bf28909ee50f3434e51cb895`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x12C9	16329 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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