Malicious PDF — malware analysis report

Static analysis result for SHA-256 295d1953ae3f2228…

MALICIOUS

PDF

61.0 KB Created: 2020-09-02 05:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b0371c62c3c843b51f96c027f35abdf SHA-1: 234dba0c0d56f04e6bd14ac03ff14716e2bc6d4c SHA-256: 295d1953ae3f222839a3ebfbc67df6866c44b6e9984bed1eb95925b79e78b5b1
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, a common technique for SEO poisoning or phishing. One critical heuristic firing indicates a link to a known malicious redirector, 'https://ttraff.link/wix?keyword=vespa+px+performance+parts'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify and usrfiles.com, suggesting a link farm designed to drive traffic to malicious sites.

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.link/wix?keyword=vespa+px+performance+parts
    • https://cdn.shopify.com/s/files/1/0440/2076/0734/files/81858415254.pdf
    • https://cdn.shopify.com/s/files/1/0463/1619/1904/files/cartoon_mp4_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4192/2982/files/lopupapoguf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/wipefebasozerudaxexugip.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/cash_flow_statement_questions_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdf
    • https://cdn.shopify.com/s/files/1/0458/1448/1062/files/numero_para_reportar_telefono_robado_claro.pdf
    • https://static.usrfiles.com/ugd/de3d83_2dd2b065e39a4164a984b4b0ea064ed9.pdf
    • https://static.usrfiles.com/ugd/d48fe3_7988367ea8414cffa89d3d6899220b7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_6671b1757c4f4f7fbbbbcd7c8b6db5f2.pdf
    • https://static.usrfiles.com/ugd/fe83c3_3a77de47485d41f48b5d4eab3af73fce.pdf
    • https://static.usrfiles.com/ugd/c7a620_235292fb0d7a48a482e16aacc78ddcab.pdf
    • https://static.usrfiles.com/ugd/b8c837_45d127f7681548068b15fb56c7872518.pdf
    • https://static.usrfiles.com/ugd/b8c837_ceb9385c38a94f67ae156edaa31c7a55.pdf
    • https://static.usrfiles.com/ugd/e5412a_55400eda7e264a26b71b683075e0e483.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_off0000b231.bin
4e717d22e0b69176315f7a9741763c23d00bf7b56273ab87543380f35168d5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB231 5164 bytes
font_01_sfnt_off0000c3b3.bin
7763513e4d9dd79d19fbf80d56bda50cd09df7cca497240d83b77b9bb4872367		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B3 10408 bytes

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