Malicious PDF — malware analysis report

Static analysis result for SHA-256 599dd747ba007718…

MALICIOUS

PDF

175.4 KB Created: 2009-07-28 12:46:19 +08:00 Authoring application: Acrobat PDFMaker 9.0 Word 版 (via Adobe PDF Library 9.0)
MD5: 2a88f7f6b9b56ebf726ab6169fa88eae SHA-1: 3b114dc246ec39e9429835705271907e67a63590 SHA-256: 599dd747ba00771827500ba7053a36e7e6d21925f9e99aac4f459a1ddf117aaa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded rich media (Flash) and is flagged by ML classifiers as malicious. The presence of an embedded SWF file suggests an attempt to exploit vulnerabilities or deliver a secondary payload. While no specific URLs were confirmed malicious, the overall structure and heuristics point towards a malicious document designed to exploit user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9788

Heuristics 4

  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • 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 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://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/pdfx/1.3/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
heapspray.swf
49a14590d7c5343695b133ff9651c2690c342ef5ac2bf002f18cd4348985f223		 pdf-embedded-file PDF EmbeddedFile object 3 at offset 0x2A56E 8038 bytes
icc_00_off000271cb.icc
653b586c4707574ffcd648ba35494daed2c76ceafcf4c07d315ed961b1dc347f		 pdf-icc-profile PDF ICC profile at offset 0x271CB 408 bytes
font_00_sfnt_off000272f8.bin
5bae21d6090f59a30136388865be4af1db24de6e621999b893f7c87caa7c43c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x272F8 26096 bytes

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