Malicious PDF — malware analysis report

Static analysis result for SHA-256 e492c0ea6a70decb…

MALICIOUS

PDF

396.1 KB Created: 2009-08-10 21:37:15 +08:00
MD5: 9b24e81d3a9a51e042f34cf2c57456e7 SHA-1: c9a1d3d8ed82c6cc171791032e141f78490b9360 SHA-256: e492c0ea6a70decb0779b617864218730b555992d8f64f32e277a471bd5e325e
108 Risk Score

Malware Insights

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

The PDF file exhibits multiple high-severity heuristic firings related to JavaScript and RichMedia (Flash) content. An embedded JavaScript file was extracted, which likely contains obfuscated code designed to execute malicious actions. The presence of these elements strongly suggests an attempt to exploit vulnerabilities or deliver a secondary payload, characteristic of a malicious document.

Heuristics 8

  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector (matched inside decoded stream)
  • 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.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
  • 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://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
kp.swf
0e2a801ee2b80cc80ded42bb0bcf5a4edc721545bca8fb4ef2093aee341d0031		 pdf-embedded-file PDF EmbeddedFile object 34 at offset 0x61C75 1297 bytes
javascript_obj0042_000.js
a54deeef139006699bbe54f0e6bf4e4a43b704fd16e1c47cba5b89e99e8f651a		 pdf-javascript-stream PDF /JS object 42 at offset 0x627C0 5738 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 7 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
objstm_0043_00.bin
4160206096ba0a9ce078e6d64a22cb5f37889aea9c2c0dd1148fc9eb9824c27e		 pdf-objstm-decoded PDF /ObjStm 43 0 obj (inflated) 572 bytes
objstm_0048_00.bin
3860eed002ebedc177f7b2ece43ed5eb553e0ad7d0a865d847b24afa560a5993		 pdf-objstm-decoded PDF /ObjStm 48 0 obj (inflated) 455 bytes

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