Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c4e31f472a6285…

MALICIOUS

PDF

335.2 KB Authoring application: Python PDF Library 055 http072057057pybrary056net057pyPdf057
MD5: 5248b8d8510c5c443d9afb86fe01df7c SHA-1: 2c61125ab4e31068c269182b899239187edb1a47 SHA-256: f2c4e31f472a628569efe022f226380f67dfde4b0851b34664365ca4ef6d3381
124 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a RichMedia (Flash) object, indicating a likely attempt to exploit vulnerabilities or deliver a malicious payload. Furthermore, a secondary embedded PDF was detected with similar suspicious findings, including JavaScript and embedded files. The presence of these elements suggests the file is designed to execute code or download further malicious content upon opening.

Heuristics 6

  • Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • 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
  • 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://adobe.com/AS3/2006/builtin

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
pushpro.swf
3f8e0576de2e9af38360a78e3ca79d41fb9060cefdb628cb69589ea03d1d3358		 pdf-embedded-file PDF EmbeddedFile object 7 at offset 0xB4F 772 bytes
polyglot_child_pdf_off0005241d.pdf
005b26a3f1edd8a57a28f33cbb9fb2c477c8d0cf4500e3f818030da841c0c493		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x5241D 6297 bytes

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