Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10de1b0e0efe38d…

MALICIOUS

PDF

37.8 KB Created: 2020-08-30 02:31:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 818b684e6a8d0a898abb32bd8255251e SHA-1: 37337881a39ed9bc59bc1e8e6c3c717328935d3b SHA-256: c10de1b0e0efe38dda910648feb1bfafeab6d88730aa1c759144c16172486060
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a "us customs fitness test". The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.ru/wix?keyword=us+customs+fitness+test, which likely leads to further malicious content. No scripts were extracted, limiting the analysis of the file's direct actions.

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.ru/wix?keyword=us+customs+fitness+test
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/56741893311.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4051/files/xufovovabiji.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/oasis_ecfmg_login.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/vumoxazurusakolidud.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/moponumo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/welewugif.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/62303589708.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/bexeruduj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/soal_tes_ist.pdf
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/48714691177.pdf
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/sap_abap_sample_programs.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/adobe_to_word_converter_crack.pdf
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/4641210895.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6290/files/22626199491.pdf
    • https://cdn.shopify.com/s/files/1/0448/0840/5152/files/14571920774.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdf
    • https://cdn.shopify.com/s/files/1/0465/5844/5718/files/tosenojixijazuwubewugiw.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_off00005694.bin
7c7100e1d7452f5e3ece7836970964648f756e6430fd3ac261d7f5dd50b13ed2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5694 4680 bytes
font_01_sfnt_off00006672.bin
bc1b0238bde4d79b350c6c5384a29a9563acd955fff54f8c2709c0df78132411		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6672 10956 bytes

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