Malicious PDF — malware analysis report

Static analysis result for SHA-256 200d8cce504f67b0…

MALICIOUS

PDF

222.2 KB Created: 2007-12-06 19:43:29 -07:00 Authoring application: PDF Publishing (version 56) (via 5.7.4.4965 Release; modified using iText® Core 7.2.2 (AGPL version) ©2000-2022 iText Group NV)
MD5: 00a67ce778a1cded9bd9c36dc15f65dd SHA-1: 3260d741b8aa8d71d0262e202063534fc7e56f30 SHA-256: 200d8cce504f67b0210f60733e51f097d9832396eb7d2dca05dc02ebd1610a17
166 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4400

Heuristics 9

  • U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED
    PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (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.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • String.fromCharCode low PDF_FROMCHARCODE
    String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/xap/1.0/t/pg/
    • http://ns.adobe.com/xap/1.0/sType/Dimensions#
    • http://ns.adobe.com/xap/1.0/g/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_015_off00001e7a.js
dfc9ec0f75db505dfa31ca868b5ec95de8e548eb06c76519abc6cd1e91232f9a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1E7A 26303 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 eval/decoder/string-building token(s).
stream_017_off00003318.js
f8a1e8a070071e240774eb6c5b6aca58b01debb4da49fa2fd97af8154a74dbb8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3318 31437 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 eval/decoder/string-building token(s).
stream_020_off00004bd9.js
f0980fd229ec2af2ec28297dea75f98e43cd1b89bc1e5f075a7228f3e72ed050		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD9 70376 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 13 eval/decoder/string-building token(s).
stream_021_off00007d42.js
f2310fe30c2fb86ae43f2e889bbfa134bbc5e0c37a0da60a316b4505be0017e9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7D42 4383 bytes
stream_022_off000082e6.bin
9d617921347e44af9b0cbc31047a191340a2ffddbe34aea65ca9227771cab287		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x82E6 263988 bytes
stream_024_off0002d0ad.js
a5a8bb9ca2c5769cb122785a343bbc78a3ce7092b0114be7c95b1a806463fc3a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D0AD 7408 bytes
objstm_0245_00.bin
5b1a0e9d0067770ad3521b90a5a3317989db31089c51549c25277bd22ef42727		 pdf-objstm-decoded PDF /ObjStm 245 0 obj (inflated) 23029 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 long base64-like blob(s).

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