Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d38904316266bf…

MALICIOUS

PDF

13.1 KB First seen: 2013-07-31
MD5: 5e120024c3a6a03c7e01bd17aecfbc3a SHA-1: f41c1cb7058f3743288f79cf0b0bba9e6110fcea SHA-256: 89d38904316266bf8f98c71fd3ea782583dd9aaeb78323c4211f6d0b43b9af36
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. This suggests an attempt to exploit a vulnerability within the PDF reader to execute arbitrary code. The embedded file artifact further supports the presence of malicious content. The exact nature of the script's execution is unclear due to obfuscation, but the primary intent appears to be the delivery of an embedded payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD5 12661 bytes
SHA-256: 24265d21f03aec3ec3f822527e29008884ecdd35a1de6622c3186732c1bf8b03

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