Malicious PDF — malware analysis report

Static analysis result for SHA-256 4741496422ea3028…

MALICIOUS

PDF

695.6 KB Created: 2010-09-17 10:09:00 +08:00 Authoring application: Foxit PDF Creator Version 3.0.1.0109
MD5: d59e88e93d56ca032ac1639f282c4aa3 SHA-1: 967dc2cdfb8cdf6f4aec3cc65fa70dc74264d171 SHA-256: 4741496422ea302879156f19b8122caa6400280a251fb21d004d4b6063e263fb
254 Risk Score

Malware Insights

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

This PDF file contains multiple embedded JavaScript streams and a secondary embedded PDF, indicating a complex delivery mechanism. The critical heuristic firing for CVE-2010-2883 points to an exploit targeting Adobe Reader. The embedded JavaScript and the secondary PDF are likely used to download and execute further malicious payloads. The presence of PRC/3D content and unescape() calls further support the exploitation of PDF vulnerabilities.

Heuristics 11

  • Adobe Reader CoolType SING font exploit — CVE-2010-2883 critical CVE likely CVE_2010_2883
    PDF embeds a TrueType/OpenType font with an actual SING table and pairs it with JavaScript heap-spray shellcode. This matches the public Adobe Reader CoolType SING exploit shape for CVE-2010-2883.
  • PRC/3D content in PDF high CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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.
  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xfa/promoted-desc/
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/
    • http://www.xfa.org/schema/xfa-locale-set/2.7/
    • http://www.xfa.org/schema/xfa-locale-set/2.6/
    • http://www.xfa.org/schema/xfa-form/2.8/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0026_000.js
2f574ea0a0abb643798c6edf545b9a2510056a799ef48c2f415cee8e337043b2		 pdf-javascript-stream PDF /JS object 26 at offset 0x47BF 9909 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
font_00_sfnt_off000a57bb.bin
dae452a846d7a897ac2b94e6073bec31682bbd07d0dcde22d0964ce7ee627ec7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA57BB 2196 bytes
font_01_sfnt_off000abf28.bin
35b04f33530adae6b3ae9fb5806a79b645221963f3fff548a9542cd2dba1f57c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABF28 12968 bytes
javascript_obj0026_000_1.js
8712bb0be98fd36e7bdc6632ba68b529d7a81f120fa051a2bf7eabf915299df4		 pdf-javascript-stream PDF /JS object 26 at offset 0x47BF 8527 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).
javascript_obj0026_001.js
96b9b07b9e270ca87a04e3c4b8566f33e95901391eb1b1eb10405592a0a2496b		 pdf-javascript-stream PDF /JS object 26 at offset 0x47BF 3369 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).
polyglot_child_pdf_off0003ca8f.pdf
e8ef0a8e0df9524ff48985436f8d389a5899a7288c6ddaa1749aadc39a43ab7e		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3CA8F 463870 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).
polyglot_child_pdf_off00090629.pdf
763b6553d530961f01aea033ace590fe8a4e15045e5349b50a03d3e4a9d3cd8e		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x90629 120932 bytes

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