Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0817eeebb20dd94…

MALICIOUS

PDF

48.8 KB Created: 2020-07-19 04:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f2c7c92998557a8145c3d65dea204ec SHA-1: 10a89f45656bdde905aca6202e60c65d954370d4 SHA-256: f0817eeebb20dd94f093e7e6c69f0a78ab10465d82fc1c8a766980ea663398c7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on platforms like Shopify and WordPress. One of the primary links, ttraff.ru, is identified as a malicious redirector. This indicates a likely SEO poisoning or link farm attack designed to lure users to malicious infrastructure.

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/wb?keyword=dentoalveolar%20abscess%20pdf
    • http://files.pitbullleatherwork.com/uploads/1/3/0/9/130969446/vowutasivuwo-famat-rotuvusi-fifosukuxabixev.pdf
    • http://files.easyfyinow.com/uploads/1/3/2/6/132695416/bebexesifofo.pdf
    • http://files.kamsportswear.com/uploads/1/3/2/7/132741064/5198566.pdf
    • http://files.saverenodumpsterdiving.com/uploads/1/3/0/7/130775753/243863cd99.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/zezobudamafufozikazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/31222799810.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7074967355.pdf
    • https://jizaparuni.files.wordpress.com/2020/06/24277720365.pdf
    • https://zavununis.files.wordpress.com/2020/06/29266146380.pdf
    • https://lanijisivob.files.wordpress.com/2020/07/81442672088.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/2788007595.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/88401140174.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/dikomakojur.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/35582356547.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/mutum.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/desenopewilirowutenuba.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/jabosejukiwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.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_off000082b7.bin
4f96efeff159fbdcd79d4aba415bfc9c99b2fa927f508b52207643784674f164		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 5088 bytes
font_01_sfnt_off00009412.bin
da326a1b193b31f7e9758b55a7c72795793802e55d5b0d45ceda57c1db6fbc3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9412 9868 bytes

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