Malicious PDF — malware analysis report

Static analysis result for SHA-256 603df5bc0930de10…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 07:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9921454bc3600a17867f8d50e419bd7b SHA-1: f9644d59a60759f3b71685b72e65cee6af3c806e SHA-256: 603df5bc0930de10cd7d2b49a115e91ff6737f5d0a77350d339aa98552dbf57b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDFs, which is indicative of a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=thermal+energy+transformation+examples'. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=thermal+energy+transformation+examples
    • http://files.naturalenvironments.net/uploads/1/3/1/8/131860787/kegidimeg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0452/1033/7440/files/e._coli_classification.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/25060148283.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/bukobebugapubuketin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/73138501239.pdf
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/65340108305.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/27663156096.pdf
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/xowavapipeguwepixavemi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6589/files/5401742958.pdf
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/33924132640.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5353/files/best_powerpoint_presentation_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/8469/4175/files/74827150079.pdf
    • https://cdn.shopify.com/s/files/1/0463/4676/4450/files/electric_guitar_templates.pdf
    • https://cdn.shopify.com/s/files/1/0463/3781/8786/files/chopper_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3585/files/aura_libro_completo_gratis.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000631d.bin
967c77cf3cd16845c10d0f5a6b70dfd05c7e1bc768f70acc3de9eed485499c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 5432 bytes
font_01_sfnt_off00007583.bin
775bf30bbdd255d8c3b7c5d4ad4353bc4cdd0029cc4c3e6944d428b0387612e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7583 10336 bytes

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