Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eed7714dbdee80d…

MALICIOUS

PDF

40.1 KB Created: 2020-08-24 01:49:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02ba5c656ec5ca2b4eb0c19bbe442296 SHA-1: 7fab2cf42d6d6a4de6147d3fec8697cfac0e8340 SHA-256: 0eed7714dbdee80d898adc64613253db8881e7dd0c7c89475588a9676e303433
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=ghana+gospel+bobolebobo'. The document body, though heavily obfuscated, appears to contain this URL and other links to Shopify-hosted PDFs, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to 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.ru/pify?keyword=ghana+gospel+bobolebobo
    • http://sifusunon.alexanderanddavis.com/uploads/1/3/0/8/130874104/16185c32f9ea1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/57218718986.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/netubufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/exclusive_agency_agreement_form_nsw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/76024237265.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/1764872440.pdf
    • https://cdn.shopify.com/s/files/1/0429/8063/8879/files/addicted_to_chaos_tab.pdf
    • https://cdn.shopify.com/s/files/1/0432/7112/7206/files/19670755193.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_off00006048.bin
b1f514813dbcdbcae66a56e9aaeeb452e91de030f59288eb4187fa7bebb8e0a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6048 5156 bytes
font_01_sfnt_off000071d9.bin
33b7c7cc5eb3a0dc4ddcf22f958c3136fe91d65a04874ad58a7ce5c51d12c872		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D9 9980 bytes

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