Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe335a9b1a8995a3…

MALICIOUS

PDF

236.0 KB Created: 2010-07-02 08:58:56 -07:00
MD5: 3b7bba25afa9c6e730448c8b5e24be55 SHA-1: dce1e09f3308049eceb8d4e18533612d77471425 SHA-256: fe335a9b1a8995a39ec20141e3ebafc64d966e260a7b2ef3988e08b8d8cbc182
66 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file exhibits multiple heuristic firings related to embedded JavaScript, RichMedia (Flash), and embedded files, indicating a high likelihood of malicious intent. The presence of these elements suggests the file is designed to execute code or exploit vulnerabilities upon opening. While the specific URLs extracted are benign, the overall structure and heuristic firings point towards a malicious PDF designed to deliver a payload.

Heuristics 6

  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector (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)
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 2 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.
  • 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://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objstm_0035_00.bin
52bd955d0fa873e8d711320d6f487289717adf877fdd263a36eedac4537e03e9		 pdf-objstm-decoded PDF /ObjStm 35 0 obj (inflated) 1993 bytes

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