Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7cfd4b69a1dbc7…

MALICIOUS

PDF

47.8 KB Created: 2020-08-19 11:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b26a7ff3b949d546899a7bf64b019d66 SHA-1: 59bb474c4520878b1ac7f982d2b431372da2beee SHA-256: ea7cfd4b69a1dbc7ee5a53858dfef2673bafca91dda5c3c318baa30170175463
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, however, redirects to a known malicious domain (ttraff.com), indicating a phishing or redirection attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=actual+ring+size+guide+uk
    • http://nokozupa.greenwicheducationassociation.org/uploads/1/3/1/4/131408899/vakubolisolafamabo.pdf
    • http://files.theembshop.ca/uploads/1/3/0/9/130969510/gunezujuritonuk-xexujabomedaxiw.pdf
    • http://files.tangodelalma.co.nz/uploads/1/3/1/4/131452806/refulamosesuwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/5432971893.pdf
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/gozixixofaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/bseb_model_paper_2020_class_10_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/zogebudeno.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/rarepasa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/radoladonexopirofizotozel.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/tisikumek.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/83756320039.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/51489514816.pdf
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/21834434970.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1065/files/jixosimixapazutuzukurali.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e6f.bin
4333e9ca57c5db9283478c5c205199d99dfe47a0c09642f9d26f3b2998c44284		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6F 4980 bytes
font_01_sfnt_off00007f6c.bin
36ab5087ddfa2cf7d5d4678c3292068ca86ca37757a9cf3f81dbc7d46a6b2a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6C 10932 bytes
font_02_sfnt_off0000a478.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA478 4324 bytes

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