Malicious PDF — malware analysis report

Static analysis result for SHA-256 0289cf98e4e9f9b8…

MALICIOUS

PDF

75.2 KB
MD5: 005e0f63b3ff4ac6b9a81a4aa9570220 SHA-1: a2336579177a9899b1b7ad3f527d9a80232e7547 SHA-256: 0289cf98e4e9f9b86173926ee7b896458ca992c2d2976537fee4e30be2210ab1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that are repeatedly used and made invisible to trick the user into clicking them. One of these links, https://kontaktlines.com/us.kuehne-nagel.com, is suspected to host a malicious payload. While no scripts were directly extracted, the nature of the attack pattern suggests a common technique for delivering secondary malware stages.

Machine Learning

  • Nyx PDF Classifier clean score 0.0001

Heuristics 2

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • 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 https://kontaktlines.com/us.kuehne-nagel.com
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_010_off000062bb.bin
291130d6ca1a9c2c0c8802497d7df30a1f5a18b12575647c60a39d6a048c9773		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x62BB 35012 bytes

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