Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a0446e1fe698abd…

MALICIOUS

PDF

35.1 KB Created: 2020-09-16 22:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cdd930d04c69d92af3dc8f8c5aa39ed SHA-1: 92178efd4ece778c04c47bbc5247460742419321 SHA-256: 8a0446e1fe698abd96a9469186abf650f28328666778adc367c7cace6455cc8a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=houseplants+word+whizzle+answers+daily+puzzle'. This link is presented within the document body, suggesting a lure to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely for SEO manipulation or further distribution. The presence of these elements strongly indicates an attempt to redirect 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.link/wix?keyword=houseplants+word+whizzle+answers+daily+puzzle
    • http://files.noreencoupenpleinair.com/uploads/1/3/2/6/132682790/fujagakaxodi.pdf
    • http://files.loadbrook.co.uk/uploads/1/3/0/9/130969700/abd7c8f27372f46.pdf
    • http://files.lovejennynkaujnag.com/uploads/1/3/1/3/131398131/2029737.pdf
    • http://files.jewishgardening.com/uploads/1/3/1/3/131383838/ba7ad93bdcbc0.pdf
    • https://cdn.shopify.com/s/files/1/0433/2391/6443/files/introduction_to_sociology_anthony_giddens.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/23050395721.pdf
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/togevinen.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8182/files/3074703900.pdf
    • https://5dfb6536-a6ae-440a-ab46-b87bee071a4f.filesusr.com/ugd/f09a9d_e92f2bb1cea6417791a7ccd1ffcd0136.pdf?index=true
    • https://0db7cdf4-cf00-4264-bf90-e4d22e4ccc95.filesusr.com/ugd/ed2d23_9032c13084924081ba95ca08e3533012.pdf?index=true
    • https://cfcac515-33d2-4fa0-a2c0-742fdc6646cd.filesusr.com/ugd/bba345_b78471969c2c47689c1667c391844277.pdf?index=true
    • https://f93b7f04-fce4-46e3-a013-973c9e3a5363.filesusr.com/ugd/d63aaf_1c234d17474b4a1e9d2cad6d3ed3b395.pdf?index=true
    • https://f34a428d-e71b-4e41-a809-3a82dcdae734.filesusr.com/ugd/dcf311_e428f100f93d4adf928caa52dac4afea.pdf?index=true
    • 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_off00004bf6.bin
16f9f4a01ce23ddc6369ccf9b6370f69b8b9f0fb7f2e7c12d950efe7c31c9bc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF6 5252 bytes
font_01_sfnt_off00005de2.bin
51a9c1a58b7173fc834cf8267f829695da6e4a391f1216f3e86b31cdb12ba22e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE2 9884 bytes

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