Malicious PDF — malware analysis report

Static analysis result for SHA-256 56690f506a9beec6…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 05:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be54c6ce068ecc84bf6a322c3058db44 SHA-1: d0b12cf52ee2f7184db433a66f5360c2e49be97e SHA-256: 56690f506a9beec616186033676885285c72e29144957b447073226d0113451d
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.com/wix?keyword=figurative+language+in+the+kite+runn, which is likely used to direct users to a malicious site. The document body contains numerous embedded URLs, many pointing to static.usrfiles.com, which are part of a link farm strategy to improve search engine ranking or distribute malicious content.

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=figurative+language+in+the+kite+runn
    • https://static.usrfiles.com/ugd/bdeb4c_3d0bd60e6d91404bba2e8bb7bd56f447.pdf
    • https://static.usrfiles.com/ugd/d1c05f_35a66b222f634f3e9b9844b7a1a1a1b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a32b667547324476903e0ce391f8835c.pdf
    • https://static.usrfiles.com/ugd/930050_a999739216d84051bd6be857d5f4ccfc.pdf
    • https://static.usrfiles.com/ugd/b8c837_a549923e13cf4248b8a2f4a604685c78.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/32353437768.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/29647370192.pdf
    • https://static.usrfiles.com/ugd/d5cf39_23964f8464fc429fb1970669a23b6d58.pdf
    • https://static.usrfiles.com/ugd/b8c837_94f3cb67255d4f0c95e1f0f6de6a604c.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/rename_visual_studio_project.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/54455513686.pdf
    • https://cdn.shopify.com/s/files/1/0440/9019/6133/files/temexamafuvinebu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7657/3601/files/76176849176.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_off00006c20.bin
00e7eb86c33cb0811e93ee825e9a1bd480a19bbb79df5336270c4df105ff71c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C20 4848 bytes
font_01_sfnt_off00007c9f.bin
a39b2e2ef7d656b00897478b31ad1d224864344538f40921466bbf194dd13d42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9F 10408 bytes

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