Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd60d91bcfbb9f7…

MALICIOUS

PDF

34.7 KB Created: 2020-08-29 02:39:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86a02d2c933842642d2102f53b97ae8 SHA-1: 132a9ba24d56b9a82e64ac740596014f65d04dd6 SHA-256: edd60d91bcfbb9f7e78a15b5a6dadbb49e8db897a7cf7cc9860c6cb17f06187c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector. The heuristic firings indicate this PDF is part of a link farm designed to redirect users to malicious infrastructure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.com/wix?keyword=puzzle+visage+maternelle
    • https://static.usrfiles.com/ugd/b8c837_b55c0ccdbc1f4eb6914d3a62434ae03b.pdf
    • https://static.usrfiles.com/ugd/b8c837_31e17141cec84f3680680dc50bba2ba8.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb3eb61edca246e3b90a5ce8c2c487bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_23a6596119524cc8bfee711c6534483c.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f45b8b58a4640e09e609d11f7edfd62.pdf
    • https://static.usrfiles.com/ugd/b8c837_9585a4372f034e088ff4e54519a577d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_72585d0f5c2d426cb60db3f11749c746.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c9decf06bb945168334a1066668c8c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_92488ebecacd42a48bb8969f0ff89d03.pdf
    • https://static.usrfiles.com/ugd/b8c837_be214fdb81eb4cc782021535ec47c022.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/65829277584.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/93907128780.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b18.bin
4159bf44d2c7eed9a42e978b0403b6970c8648d3aafca42f1d2671edac79a698		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B18 5116 bytes
font_01_sfnt_off00005c78.bin
08e2335f0d8620fca9310747893e43b8e717bc80f0930b6ad56e1080ed138a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 10108 bytes

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