PDF / .SWA malware analysis — malicious · f3b15cf1247fd485

MALICIOUS

PDF / .SWA

22.5 KB Created: 2010-08-30 14:49:32 Authoring application: uluSuss posyEff

MD5: fe07c74b13de3a9cb2b9a09cc7431dbb SHA-1: 6433dccb1f3e598e9fb53ccd4d0ffb240acebd2e SHA-256: f3b15cf1247fd48510a993a8ef94988fc8f85683b58dc0ee8b6e7e75fd58510d

168 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains XFA form elements with embedded JavaScript, triggering a heap spray exploit. This exploit is designed to download and execute a secondary payload, indicated by the embedded file artifact 'embedded_file_obj0010.bin'. The ML classifier strongly flags this PDF as malicious, supporting the identified attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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 0x19A9	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x1A5A	228 bytes
`embedded_file_obj0010.bin` `fdbc555b3b804a855384505f515c9683060c2b6e325cfb6d6f816b72416b56b2`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x1B4D	30467 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 0x5182	199 bytes
`embedded_file_obj0012.bin` `39406d9a66e5a178bf05d9de86332cad5bcd36fc71a3f740e0af6646aa37faad`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x5274	131 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x5335	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x53DC	56 bytes

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