PDF malware analysis — malicious · afb1900185f54382

MALICIOUS

PDF

14.9 KB Created: 2010-08-29 16:19:36 Authoring application: SavUgy JirEqa

MD5: 463c62ccb3e332d9d3f9e520364416d4 SHA-1: 1a6b978503a0d9bcf88026cf63b942d8d9ca27a9 SHA-256: afb1900185f54382b44b37fe2dc15a0fa95797b500e68a422c8d6ff2cfddf389

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file exhibits high-severity heuristics related to XFA forms and eval() calls, indicating the presence of executable script content. The ClamAV detection 'Pdf.Exploit.Dropped-81' strongly suggests it's a known exploit. The embedded script payload and the suspicious embedded file point towards a downloader or dropper functionality, aiming to fetch and execute further malicious content. The document body is heavily obfuscated and unreadable, providing no direct clues about its lure.

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 (matched inside decoded stream)
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/

Extracted artifacts 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x19E	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x237	228 bytes
`embedded_file_obj0010.bin` `ff0e787eb66e575b5ebf3bad4a1414c7b9f54f62655f85cb82eaa82cece01815`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x377	1713 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x736	199 bytes
`embedded_file_obj0012.bin` `3e0578af0e371f79af117ff61f6ed83074bab73a07b5f36588e07b67fccca882`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x828	29918 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x36C8	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x376F	56 bytes

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