PDF malware analysis — malicious · afcec6a86d876c98

MALICIOUS

PDF

8.0 KB

MD5: 3074f83faabb5e9fa87791d0c9384a9e SHA-1: 001ad0afa6c26df990b192d477684d2071c2bcbf SHA-256: afcec6a86d876c98aeb7c037a3acb178b2b9913d7dab4806360acede9a03c051

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF document contains embedded JavaScript, indicated by the PDF_EVAL and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. The ML classifier strongly suggests malicious intent. The embedded script is likely responsible for downloading and executing a second-stage payload, a common technique for initial access. While specific URLs for the payload were not extracted, the presence of embedded files and script points to a downloader or exploit delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9952

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x1AB	67 bytes
`embedded_file_obj0009.bin` `6b2260d3c78649345d3f0b850b831d545d33bb7017ccdf438cdfe1e9db7f2db2`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x238	294 bytes
`embedded_file_obj0010.bin` `472a6105c01e152c54d147f51c1385fae2941fa616546798ebae3b596dc0ccfb`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x3A9	616 bytes

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