PDF malware analysis — malicious · 4d147d5985be7ac0

MALICIOUS

PDF

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

MD5: 4f1cabb28a2692dafde8a086933616a3 SHA-1: ad1dc58bcca74a6db2c0c14e689ea1664b8532c3 SHA-256: 4d147d5985be7ac00b15451f6e760bd69a55bac76e429df7cd488eed08e51fb1

78 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_XFA_SCRIPT heuristics. This script is likely designed to be executed when the PDF is opened, potentially leading to further malicious activity. The embedded file artifact 'embedded_file_obj0008.bin' is also a strong indicator of malicious intent. The XFA form structure suggests a method for delivering the exploit.

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` `768919b3d5b9945af8b975804b867605c49856455b91af21cb4cadaa1e7e86d3`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x166	12946 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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