Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e45b59d195a65c…

MALICIOUS

PDF

85.9 KB Created: 2008-03-03 17:06:00 UTC
MD5: bbe9feb9f3c853372aa3f25a21f879a7 SHA-1: 08d2aee44b92a305440a593c35dd778937ce580a SHA-256: e2e45b59d195a65c3c8f41a0c46131f41792c62825a54a701d7a5157f6a24d1a
74 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The JavaScript stream, identified as 'stream_004_off00001162.js', contains an 'eval()' call, suggesting it is designed to execute arbitrary code. This script likely downloads and executes a second-stage payload. One benign URL was found alongside an unknown URL, 'http://www.pdf-repair.com', which may be related to the malicious activity.

Heuristics 7

  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • 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)
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload (matched inside decoded stream)
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic (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.pdf-repair.com
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00000dce.bin
28d5ff4b6f449ddbcbdcc33dfd319b38a2a15e42d1e4051efbf9d5590f4e5764		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDCE 1561 bytes
stream_004_off00001162.js
d09b3f8531bbd0b9fb1a15b94dac709f7710e3e969ad94204049ce689fed2ee0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1162 18155 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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