Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd85d474660a670…

MALICIOUS

PDF

45.5 KB Created: 2020-08-17 09:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4040fbfb3ff4ad40209374fa7de838b1 SHA-1: 6e6825ef0f1d0c033ebaa491b470a659bc9e3ffa SHA-256: fbd85d474660a670f3d94b0b02bf8f0fed2ac1d20aa973a11decb4cdfff2cf73
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify. One of these links, presented as an auction guide, redirects through a malicious domain. This indicates a phishing or scam attempt designed to lead users to malicious content.

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.cc/pify?keyword=auction+bidders+guide+nsw
    • http://files.crossfittayho.com/uploads/1/3/2/6/132695332/4861520.pdf
    • http://files.brownwoodhealthdepartment.com/uploads/1/3/1/8/131871569/duxopixogozopil-buzowafuderu-xarasomamuvufem-vabudagidila.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/84348801428.pdf
    • https://cdn.shopify.com/s/files/1/0432/0745/8975/files/rewavowi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5078/5173/files/marginal_costing_in_management_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/9089055207.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/43871660150.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/oxford_word_skills_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/9786/3832/files/digewadejinaka.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3929/files/47121014857.pdf
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/44729019740.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/rolonalulubinubo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdf
    • https://cdn.shopify.com/s/files/1/0430/5305/6149/files/bujekagokumozi.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_off00006c01.bin
0ccfb02a85bc581f41a8a1e2429295385bf8ff0b51cf1a6b28350c87ca53e47f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C01 5084 bytes
font_01_sfnt_off00007d60.bin
67ce4d8b3256ae96c2b6123da0e11123b94dce843d5cf73c090cfa2e3f938bdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D60 13688 bytes

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