PDF malware analysis — malicious · 92a209a8b9fb8b3f

MALICIOUS

PDF

29.0 KB Created: 2010-08-29 16:19:36 Authoring application: SnegDomuxuducokutig XomigohOdezilymyjatg

MD5: 8a5d9eb7e111d259a3dff1ae19f55f2a SHA-1: 2aa0030962d69232e46edb49b0ccc94245ece7f6 SHA-256: 92a209a8b9fb8b3fbfc9ab2deb42017e137ec647cb49d31bc5813c33870146de

238 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains XFA forms with executable scripts and embedded files, triggering critical heuristics for PDF exploits and detected embedded malware. The ClamAV detections 'Pdf.Exploit.Dropped-81' and 'Pdf.Exploit.Agent-36318' on the main file and an extracted artifact respectively, indicate the file's malicious nature. The embedded scripts likely facilitate the download and execution of a second-stage payload.

Heuristics 9

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
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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
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` `43973f0f53d2c7339e535588dd0f56c4ad9fb9977436943d0d4ff3ecb5f4b8be`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x3A9	605 bytes
Detection ClamAV: Pdf.Exploit.Agent-36318 Obfuscation or payload: unlikely
`embedded_file_obj0011.bin` `70dd883c79d8aeebcdef58219e1d7e7b3728d1a915ee011e9df3d3d7732e3993`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x651	26179 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 0x6CDF	323 bytes
`embedded_file_obj0014.bin` `1029656e35c14c7d269243c99dfcb1289c4ce60c700c78b5e620eb7a58539936`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x6E6C	178 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 0x6F64	77 bytes
`embedded_file_obj0016.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x6FF8	56 bytes

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