PDF malware analysis — malicious · fa097fceb6d985cc

MALICIOUS

PDF

4.3 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob

MD5: c032d7e24e9e56eda039d6c6f58a9bd8 SHA-1: 6c8274187bb4c0b082ebdefb61133d8b5fce03db SHA-256: fa097fceb6d985cc95ff849df18a35e456068cae00b5bbfe5c30b32f738bd8ac

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded script content, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_XFA_SCRIPT heuristics. The ML classifier also flagged this PDF as malicious with high confidence. The embedded file 'embedded_file_obj0008.bin' is suspicious and likely contains the secondary payload. The XFA form suggests a more complex attack vector than a simple embedded object.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `7e9ffba235d16f902923340c5ec3ea3e4a9ceee393053b8c4d86a132278aee0e`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x169	13172 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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