PDF / .SWA malware analysis — malicious · 51965bc54830a610

MALICIOUS

PDF / .SWA

17.1 KB Created: 2010-08-25 01:01:57 Authoring application: jamAmia gaurPoi

MD5: 393c8c67f0ccb09022a5e66ea33557ec SHA-1: 8e0d4885b1eb79f048812e2b42047d99cad76988 SHA-256: 51965bc54830a610a48800cbd158a73dd43b7365e98b250759fc0d741781fe03

138 Risk Score

Malware Insights

The sample is a PDF document that leverages a heap spray exploit within its XFA form to execute malicious code. This is indicated by the PDF_XFA_HEAP_SPRAY and PDF_XFA_SCRIPT heuristic firings. The exploit likely aims to download and execute a second-stage payload, as suggested by the presence of an embedded script payload. The specific embedded file 'embedded_file_obj0010.bin' is flagged as a suspicious artifact.

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 0xD94	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0xE45	228 bytes
`embedded_file_obj0010.bin` `bbfa772131d9ce27c33bc58171e2a0cda3d70d7c9a31eaabede73e11cbdb759e`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0xF38	24658 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 0x3C15	199 bytes
`embedded_file_obj0012.bin` `aab50c4e0682ce68401c4bb8214d42d7197bb3461c8bf3c782d16e0272c5bc85`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x3D06	131 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x3DC3	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x3E6A	56 bytes

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