Malicious PDF — malware analysis report

Static analysis result for SHA-256 01dfc8889fc7a2e9…

MALICIOUS

PDF

28.9 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap First seen: 2026-05-08
MD5: 772d6a2f4264005cef84fddfb538422a SHA-1: eb3b6f8b6e18ccc697af00bbcce6c8a53a9d1558 SHA-256: 01dfc8889fc7a2e94ec9c33612072e33e6cf17c8dde4fbcd930f2d86f8d9e14a
212 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript within an XFA form, indicated by PDF_XFA_SCRIPT and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. The 'eval()' call and malformed stream length suggest an attempt to exploit a vulnerability for client execution. ClamAV detection as 'Pdf.Exploit.Dropped-81' further confirms its malicious nature, likely acting as a dropper for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
    Matched line in script
    eval('zz=eval');
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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 script payload in PDF stream info 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.
  • 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/ In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xfdf/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 67 bytes
SHA-256: 04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51
embedded_file_obj0009.bin pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 781 bytes
SHA-256: e2e0f6c5cb2e0b2697da89386bfc3718eedaf1b6a2b1d24dd1176d27117bf77a
embedded_file_obj0010.bin pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x4BA 87 bytes
SHA-256: 76e71e452338d7384967dbf3b8d5c06bea128714940cb02957dd801959b08deb
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
embedded_file_obj0011.bin pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x55C 26494 bytes
SHA-256: 3f5362cdaa8ad40bbda2bc3f4d4d6a5912adc2aef361021e4abf9bb980c7dbae
embedded_file_obj0012.bin pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6D25 323 bytes
SHA-256: 103d1e7983cf88bfacedddb4af33ffb5317d9c2c8b3e1bfd987b2c5d712bc985
embedded_file_obj0014.bin pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x6EB2 163 bytes
SHA-256: 9035511eba39b5ffb4bdec81b45c98867875af195e374d460662ede3e9237621
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
embedded_file_obj0015.bin pdf-embedded-file PDF EmbeddedFile object 15 at offset 0x6F9B 77 bytes
SHA-256: e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
embedded_file_obj0016.bin pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x702F 68 bytes
SHA-256: 78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95

Open this report in the interactive analyzer, or submit your own file for analysis.