PDF malware analysis — malicious · 69fedb0015374c76

MALICIOUS

PDF

29.5 KB Created: 2010-08-29 16:19:36 Authoring application: JnYnub HtymapyZyjafezewi

MD5: 7fd067126018c1f5b5855a04538304f6 SHA-1: e37ff0d9133bf140c5d6c491f322c69da61b71d5 SHA-256: 69fedb0015374c7658fe2a326363950ac55634936eed5410b52f63155fabcdf3

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains high-severity heuristics indicating embedded executable scripts and XFA form usage, flagged by ML classifiers and ClamAV as malicious. The presence of embedded files and script obfuscation suggests the PDF is designed to deliver and execute a secondary payload, likely exploiting a client execution vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 8

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.
ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 script payload in PDF stream low 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.
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.
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/
- http://ns.adobe.com/xtd/
- http://www.xfa.org/schema/xfa-data/1.0/
- http://ns.adobe.com/xfdf/
- http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 8

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` `f49c057a5b29798e960cface3385a4a61f4e269f2dc68d1a5fa802babe8ce01a`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x3A9	616 bytes
`embedded_file_obj0011.bin` `c62f3f75a369d06b4c299bd8f755ea41803249c3f246fae1ae4f0abedacf3dca`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x65C	26700 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0012.bin` `103d1e7983cf88bfacedddb4af33ffb5317d9c2c8b3e1bfd987b2c5d712bc985`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x6EF3	323 bytes
`embedded_file_obj0014.bin` `8e1b331db89c2a08e0f09006a7121d814cc61bddbd247117b1369a1f24713d5d`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x7080	186 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0015.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x7180	77 bytes
`embedded_file_obj0016.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x7214	56 bytes

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