Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c80f176b0b7bd9…

MALICIOUS

PDF

33.8 KB Created: 2020-08-26 04:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43b5f0b10686f4583905a9db7281e80b SHA-1: add7072a40478d1302cf39d3d988e8df309b3ee0 SHA-256: e5c80f176b0b7bd9a2dbf53b85a5f8c3624e2ca6eb3c6a8ab901014c598bc026
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, identified as a PDF link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=wong+pediatric+nursing', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the same malicious URL, suggesting an attempt to drive traffic to potentially harmful content. The presence of numerous Shopify-hosted PDF links indicates a coordinated effort to manipulate search engine results or distribute content through a seemingly benign platform.

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=wong+pediatric+nursing
    • http://dolonobin.d-dcrafts.com/uploads/1/3/1/3/131383483/rawopuxajop.pdf
    • http://files.rosecitypepperheads.com/uploads/1/3/2/6/132683330/0bee86f0472c29.pdf
    • http://lerawovo.pendeenpottery.co.uk/uploads/1/3/0/7/130775258/felujalopukepolul.pdf
    • http://files.uniquestylezsf.com/uploads/1/3/1/4/131407944/0dd1e.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/bosopolapapumad.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/84520790137.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0432/5415/3371/files/carpal_tunnel_syndrome_causes.pdf
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/vejatonoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/51611818615.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/zelozozujewovivowumino.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/dieta_para_ganar_masa_muscular_y_perder_grasa.pdf
    • https://cdn.shopify.com/s/files/1/0428/6277/2380/files/67291043886.pdf
    • https://cdn.shopify.com/s/files/1/0431/6944/8097/files/fiwawajumotikodaxosekipa.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_off000047ba.bin
4ce78000113bf7e59e6577c34095f172ff89abaa1c1e657ea1e28539e0d6194a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47BA 5220 bytes
font_01_sfnt_off00005997.bin
a9477c796cb247b3755ae289884c15417b2c91e6dde4df7caed7ed5612e57228		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5997 9796 bytes

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