Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b3009195e6301c…

MALICIOUS

PDF

37.1 KB Created: 2020-08-15 23:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5b8b3357bd238cffe9dfe6bc05a774a SHA-1: e6f1907242c1d65210df25b3e54202cb2067ed33 SHA-256: 09b3009195e6301c80832409ba1ae19f39bd19712b31dce3b430d5699844839c
154 Risk Score

Malware Insights

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

The PDF document contains embedded links that are part of a link farm, with one primary link identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wb?keyword=ford%20focus%20titanium%202014%20manual%20pdf, which is flagged as malicious. The presence of numerous Shopify-hosted PDF links suggests an attempt to manipulate search engine results or distribute malicious content disguised as legitimate documents.

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/wb?keyword=ford%20focus%20titanium%202014%20manual%20pdf
    • http://domala.vertimu-biurasvilniuje.eu/uploads/1/3/2/6/132681670/4a2d5d2414.pdf
    • http://dosalo.hottopicstalkradio.com/uploads/1/3/2/6/132681495/4f31b019a1f.pdf
    • http://files.ptediting.com/uploads/1/3/1/8/131871816/nawesamojazefamovamo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3415/6967/files/nobomofokagilizekef.pdf
    • https://cdn.shopify.com/s/files/1/0430/1986/2179/files/64933491035.pdf
    • https://cdn.shopify.com/s/files/1/0440/9756/8920/files/zogafemanukobema.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2279/files/52730830949.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/3714682706.pdf
    • https://cdn.shopify.com/s/files/1/0447/1973/4938/files/how_to_prepare_petty_cash_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/81497332286.pdf
    • https://cdn.shopify.com/s/files/1/0440/0594/9590/files/xibokexojuwabuperewirogog.pdf
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/mexogopagonum.pdf
    • https://cdn.shopify.com/s/files/1/0448/8495/1207/files/wing_chun_techniques_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/defixexawidigusukurej.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_off000050fa.bin
b992d0c6d906e3a734a362d3e61ef8e341c690ee08eec8c3696c5a331fac2591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50FA 5668 bytes
font_01_sfnt_off00006435.bin
7ded954e90ab3a4c2e4e43ea8b13edc8398128c564dec5ab5a004cdf1e628286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6435 10784 bytes

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