PDF / .SWA malware analysis — malicious · b87b45459332be4d

MALICIOUS

PDF / .SWA

18.6 KB Created: 2010-08-29 17:04:02 Authoring application: fanBoor zitiLas

MD5: 3f063b7a792a14daebc2f553aec60968 SHA-1: 913c86e78f8cb1e5e68d139b887ea4e8b61b2dea SHA-256: b87b45459332be4d5591cc1bed93835db62a1766720befe1f1da1b988d5739b2

138 Risk Score

Malware Insights

The PDF file contains XFA form elements which are known to be vulnerable to heap spray attacks. The heuristic 'PDF_XFA_HEAP_SPRAY' indicates the presence of exploit code designed to trigger this vulnerability. Additionally, an embedded script payload was detected, suggesting the file is designed to download and execute a second-stage payload. The embedded file 'embedded_file_obj0010.bin' is likely the payload.

Heuristics 6

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.
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 0x1252	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x1303	228 bytes
`embedded_file_obj0010.bin` `41dfb436a2dbe765e43c07837c0489d4a0169966782d687ec8199eab8422cb4b`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x13F6	25463 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x421F	199 bytes
`embedded_file_obj0012.bin` `9a2a4a8a0ee4653d3b4ee700d4438a80b321b4bf3cdab2e745c128c632ff6d33`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x4310	131 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x43CD	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4474	56 bytes

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