Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29b5d20c84b04b3…

MALICIOUS

PDF

14.2 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: 5330fbe29888563477e24334bd739914 SHA-1: daddfc6b3ee0ee06ffd335f246d41cdf4f618620 SHA-256: d29b5d20c84b04b34ac08f1e35140e0abfe2fcafbaffdcdea813791e95cf90ab
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-81' strongly indicates a known PDF exploit. The presence of embedded script payloads and embedded files further supports this, suggesting the PDF is designed to execute malicious code upon opening. The document body contains obfuscated JavaScript-like code, likely part of the exploit mechanism.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
  • 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/
    • 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.

FilenameKindSourceSize
embedded_file_obj0006.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777		 pdf-embedded-file PDF EmbeddedFile object 6 at offset 0x213 84 bytes
embedded_file_obj0007.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 7 at offset 0x2B1 228 bytes
embedded_file_obj0008.bin
dfaceef1c61cf70485e21091ff1ba39269ff32b206c8a922a5135e2049f43632		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x3E0 1193 bytes
embedded_file_obj0009.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x8D3 199 bytes
embedded_file_obj0010.bin
012a8f6c908d0f857b736298a48a431b60e74ea8875fef64c22ea49180b6d5fa		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x9E7 10329 bytes
embedded_file_obj0011.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x328A 77 bytes
embedded_file_obj0012.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x3321 56 bytes

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