Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c89124a7b4e06c…

MALICIOUS

PDF

313.1 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: 3e1947df5dec9878917e7b0f0c5d83e8 SHA-1: 35d3d14c8731b74ce16fa6b3a48fdbc11e32b7df SHA-256: 73c89124a7b4e06cb1667fd3c37a7b0e2924bc8b147cc9bf828e838435f91bf2
142 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains a critical vulnerability (CVE-2010-1297) related to Adobe Flash RichMedia, indicating an attempt to exploit a client execution vulnerability. The presence of an embedded SWF file ('heapspray.swf') further supports this. While no specific family is identified, the exploit mechanism points to a malicious document designed to deliver a payload upon opening.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9045

Heuristics 5

  • Adobe Flash authplay SWF exploit in PDF — CVE-2010-1297 critical CVE likely CVE_2010_1297_FLASH_RICHMEDIA
    PDF combines RichMedia Flash activation, a crafted SWF with ActionScript prototype/AVM-era markers or the AES-PHP/authplay variant markers, and PDF-side shellcode heap-spray staging. This is the static delivery shape associated with CVE-2010-1297 in Adobe Reader's bundled authplay.dll.
  • 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# In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/pdfx/1.3/In PDF document text
    • HTTP://ADOBE.COM/AS3/2006/builtinIn PDF document text

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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