Malicious PDF — malware analysis report

Static analysis result for SHA-256 d949f698a1dc035a…

MALICIOUS

PDF

46.0 KB Created: 2020-08-09 04:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77a1d142e850d103dc7f7fd682db4f78 SHA-1: 35cc4d8981c179fdc10a7852ed0e37c5282595e0 SHA-256: d949f698a1dc035a05da5c99462e8848d588c899d714933d4a5a0803985c72bd
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, which are likely part of a link farm designed to obscure the ultimate malicious destination. The primary malicious URL identified is https://ttraff.ru/pify?keyword=business+ownership+structure+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'business ownership structure pdf' and mentions wkhtmltopdf, suggesting a lure to disguise malicious redirection.

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/pify?keyword=business+ownership+structure+pdf
    • http://files.islanderdivers.com/uploads/1/3/1/4/131452735/9037270.pdf
    • http://files.stokerhounds.co.uk/uploads/1/3/0/7/130739601/1a45dcce6aca3.pdf
    • http://files.kyletheinspirer.com/uploads/1/3/1/4/131406403/a1268db72.pdf
    • http://files.easternsloperanch.com/uploads/1/3/2/6/132681404/3588728.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/kojitu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5524/2655/files/33506043910.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/majin.pdf
    • https://cdn.shopify.com/s/files/1/0437/5317/7237/files/ritegodiwelefazowud.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/brucellose_animale.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/nokuzepotiwiros.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/72263179505.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/91383895688.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/the_everyday_writer_5th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/taropilovuxafukorag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/36129546446.pdf
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/rolase.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_off000075da.bin
ecc0abcbf7285dccd5b4ca6634216aeaee7e8c15a42b9a4aa42ef36d3587665b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DA 5144 bytes
font_01_sfnt_off00008771.bin
fa84ee671f5cbf0205eb45291425824fefd23d1e39257f28ba4ad49369d5e38c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8771 10400 bytes

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