PDF malware analysis — malicious · b99d0eb29c49210e

MALICIOUS

PDF

70.4 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap

MD5: 40dda9a0571aa1d424a67466ceaaf950 SHA-1: 70b7ba1494ad9f3e6a4240ae4e7af8e5c475a086 SHA-256: b99d0eb29c49210e7a753fd54efeb61da38f8dcb0c0527ad25fa5f27bdd70ea9

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded scripts and is flagged by ClamAV as Pdf.Exploit.Dropped-81, indicating it's designed to exploit vulnerabilities. The presence of XFA forms and eval() calls suggests dynamic content execution. The embedded file object 'embedded_file_obj0010.bin' is also flagged as suspicious, likely containing the secondary payload. The primary attack vector appears to be exploiting PDF vulnerabilities to deliver a malicious payload.

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 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 7

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 0xD7	67 bytes
`embedded_file_obj0009.bin` `10524c8841105d398f3e8e8c790bc322eaa76a0f71d67929337ac5d9e1752e52`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x162	815 bytes
`embedded_file_obj0010.bin` `0daf333234b77c81f41e69f690cf08f48298b27142f8f6fef5701b67f5fb50af`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x4DC	101 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0011.bin` `e1dda874853e2b1792c352c2187dfd77ff66dea06e216eb66fcdbc6d378b85aa`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x58C	69115 bytes
`embedded_file_obj0012.bin` `6dfc2cfc739bf5cd5514e048143c782a1af7b4c86ed10bd88203471efa9b3fe7`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x113D2	389 bytes
`embedded_file_obj0014.bin` `9f69c42e66b0c1666412737dc9cf4aa42379ee793c4ad8d07130781756ea33d5`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x115A4	65 bytes
`embedded_file_obj0015.bin` `51d6d76eddb1746e412f89f4d1c1b0d620c60fb4a5641c018e93871be63968a9`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x1162F	147 bytes

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