Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a7e8fc14bd7faa…

MALICIOUS

PDF

74.3 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: 8a4d16effcdc388946f094b0493587ff SHA-1: fac83cdf23d6b6d2cf5382b1a6dbee23af9afca9 SHA-256: 30a7e8fc14bd7faaf19ab4f0671974ca05f9de6e9107024315d596fec685baa6
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

This PDF file contains multiple high and critical heuristic firings indicating it is a malicious exploit. Specifically, it triggers PDF_EVAL and PDF_XFA_SCRIPT, suggesting the execution of risky code within an XFA form. The ClamAV detection 'Pdf.Exploit.Dropped-81' further confirms its malicious nature. The file also contains several embedded files, one of which is flagged as a suspicious extracted artifact with script obfuscation indicators, likely serving as the second-stage 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.

FilenameKindSourceSize
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
0704e53451984cad637df829d928999f75cd61fcfe2c8b263f5b24d436f15c4b		 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
74a6fd640037f93c297eaacdfddca099f25ccbaafb3943fd79f1dc3de29b4e89		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x58C 73044 bytes
embedded_file_obj0012.bin
6dfc2cfc739bf5cd5514e048143c782a1af7b4c86ed10bd88203471efa9b3fe7		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x1232B 389 bytes
embedded_file_obj0014.bin
9f69c42e66b0c1666412737dc9cf4aa42379ee793c4ad8d07130781756ea33d5		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x124FD 65 bytes
embedded_file_obj0015.bin
51d6d76eddb1746e412f89f4d1c1b0d620c60fb4a5641c018e93871be63968a9		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0x12588 147 bytes

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