PDF / .SWA malware analysis — malicious · 9259d5f6b866e326

MALICIOUS

PDF / .SWA

17.2 KB Created: 2010-08-31 23:43:00 Authoring application: suqBuoy singSuq

MD5: 23e0b2baffe36bd433db792b59751119 SHA-1: 63e3f17f474161c23920b340de0ed5a954bd6b19 SHA-256: 9259d5f6b866e326809ff542ca6a97b9dc3af20ab7985e333358b5e0089f46d4

138 Risk Score

Malware Insights

The PDF sample utilizes XFA forms with heap-spraying exploit code, indicated by the PDF_XFA_HEAP_SPRAY heuristic. It also embeds a script payload, flagged by PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_XFA_SCRIPT. This script is likely responsible for executing the embedded file, identified as embedded_file_obj0010.bin, which is the primary payload. The exact nature of the embedded file's execution is not fully detailed due to obfuscation, but the overall pattern suggests a delivery mechanism for further malicious activity.

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 0xE12	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0xEC3	228 bytes
`embedded_file_obj0010.bin` `afc0a4f6a2e8cb0839aeacc54cd40c4773a3c164516fe2bbb14e82cf670c452f`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0xFB6	24435 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 0x3C78	199 bytes
`embedded_file_obj0012.bin` `ec12d2406a4fce14067d4a8ea61206698b5491a524a7dcf5f9909037f172ba4f`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x3D6A	131 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x3E29	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x3ED0	56 bytes

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