PDF malware analysis — malicious · d38bdf08c70644a6

MALICIOUS

PDF

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

MD5: 730158427f3340d2e2e125f9ea449c44 SHA-1: ed3f6ab8d0b0e3fff86a8f76ce2529bedfefc7f2 SHA-256: d38bdf08c70644a60745a700868f2a5fdf78473164c013a0110603cc71e103b1

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

The PDF file contains embedded executable script content, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'PDF_XFA_SCRIPT' heuristics. The XFA form likely contains a script that is designed to be executed upon opening the document. This script is suspected to be a payload dropper, as suggested by the 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic which flagged suspicious script obfuscation indicators and an embedded file. The exact nature of the script's execution is unclear due to potential obfuscation, but it is highly likely to download and execute a second-stage payload.

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` `816e3eae4be403de57c0c016e255f7c3d4bba99adc250de221dd1ef10e649074`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x166	12951 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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