Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f193aa6aa9f6900…

MALICIOUS

PDF

46.7 KB Created: 2020-08-30 05:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 685247a82a7b5616c32d7a12e5a42fc0 SHA-1: 5bb29371ebb524385eb5d5060f32ad311217e902 SHA-256: 4f193aa6aa9f6900cf5af5e1b3d0f8e505564924d91ac3b507d9325b55ff8ab0
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 Shopify domains hosting other PDFs, a technique often used for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text but includes the target URL and a benign-looking PDF URL, suggesting a lure to engage the user.

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/wix?keyword=que+es+etnografico
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/lejutop.pdf
    • https://cdn.shopify.com/s/files/1/0445/3584/0932/files/i_ching_wilhelm.pdf
    • https://cdn.shopify.com/s/files/1/0438/5266/0901/files/jixosogepikujonefazilig.pdf
    • https://cdn.shopify.com/s/files/1/0462/3764/7002/files/hp_designjet_500_plus_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/5789/5841/files/witadogopifojafitusez.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/2056711957.pdf
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/suwatexiwiwipinunadoluf.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/video_from_website_online_app.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/levugavemezopidofixum.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/44709889398.pdf
    • https://static.usrfiles.com/ugd/ad2ade_449a5cbd11384632b51f9a2ff85757d7.pdf
    • https://static.usrfiles.com/ugd/538d67_797107cb2a4940b1a1b017343cad0959.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b2e0677ffdc434289e2fae52a9c2527.pdf
    • https://static.usrfiles.com/ugd/6908d7_0a8d5c847e1342eeba0700c888a5afb9.pdf
    • https://static.usrfiles.com/ugd/b8c837_183ff3b8f036422a9c7b091658ea9997.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_off00007786.bin
13215c8c21cb613c2433b772a343d600fd2b01629b9f38b0f7ec3f7fa4a404e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7786 5080 bytes
font_01_sfnt_off000088dd.bin
8813844e129f9856a852b9f5ffabfeee6c64a725c3a19978b8b2a44f9f5fa7cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88DD 11052 bytes

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