Malicious PDF — malware analysis report

Static analysis result for SHA-256 68cd2aeb0d873264…

MALICIOUS

PDF

29.7 KB Created: 2012-12-11 17:01:31 Authoring application: pgvdttsdhcgam (via waymhnpjmjprfv)
MD5: 06944d717ca9084d0feecdcfa2ab2d75 SHA-1: fefcdf16881e325db387ccbb451030dc30c5476d SHA-256: 68cd2aeb0d873264e13a0e7349555815dcaa58f5f59349fc9ba30843ab0ffc4a
112 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that is obfuscated and likely intended to exploit CVE-2010-0188 in Adobe Reader. The ML classifier strongly indicates maliciousness, and the presence of an XFA form with a known exploit points to a client-side execution attack. No specific malware family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/2.2/
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0010.bin
f5fada8101d0364117b2454492c05b64911df9d040cddf613d50212da6228859		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x12A2 10740 bytes
stream_011_off000041c0.bin
392d4f07be91edcc9359ef94bc01fc8fbd40fa048af13b58bb9eb28874772ed6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41C0 209 bytes
xfa_metadata_stage_000.js
fa4f30899a0bad5a69fc79126be5b080120b30d9a7d63c4156b74c17b7675162		 deobfuscated-js XFA /Title hex-XOR decoded JavaScript (raw, key=vanrxtsLKSR) at offset 0x5353 4130 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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