Malicious PDF — malware analysis report

Static analysis result for SHA-256 3692123e789a0445…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 18:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8786cf21788b5cb4eb5503e4aadaee03 SHA-1: 506c6849cdbe97c8fd90172d7f43bd1b3dd823e7 SHA-256: 3692123e789a044522d3a5045074332dc79320d6cf9def31984943959bef4a7a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a PDF link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic. The primary malicious URL is https://ttraff.ru/pify?keyword=achari+america+yatra+telugu+hd+movie, which is likely used to redirect users to further malicious content.

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=achari+america+yatra+telugu+hd+movie
    • http://makig.jessmarais.com/uploads/1/3/1/3/131380600/b9a7d.pdf
    • http://wedapafeb.morganadvisory.net/uploads/1/3/1/3/131379296/jozizidowedez-pexag.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/75938916840.pdf
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/balusaxuluruminugapiwemil.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5040/files/89293931315.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1049/files/2297858063.pdf
    • https://cdn.shopify.com/s/files/1/0440/0431/1190/files/xugebojixat.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7354/files/voxobaxusojarotux.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/85183913489.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/romabarewirexifenal.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_off00005972.bin
b07680b8754b354358280473aa6aa649967e295419d705d3211812795ab6b45a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5972 5328 bytes
font_01_sfnt_off00006b75.bin
4487dad94740aba44948327585be0ea75667ed9ee66347875d32653c2398c6ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B75 10652 bytes

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