Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9f40292b9d66a6…

MALICIOUS

PDF

59.2 KB Created: 2020-08-08 22:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54163077ac132d9359ae7a8b447fd694 SHA-1: 118b1cd60df977d087b69bff4e050633468f3628 SHA-256: cc9f40292b9d66a69c3604b7052a10ccbcae7b6a198c9a4b21b0e4ceedaf3bea
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ccna+lab+guide+routing+and+switching+pdf'. This indicates the document is designed to redirect users to potentially harmful content. Additionally, a PDF link farm heuristic suggests the document is part of a larger effort to distribute malicious links, likely for SEO poisoning or phishing. The document body, though heavily obfuscated, contains URLs that are also listed as embedded URLs.

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=ccna+lab+guide+routing+and+switching+pdf
    • http://rotir.mcroyalhotelpng.com/uploads/1/3/1/3/131379246/5319210.pdf
    • http://files.bellafurworks.com/uploads/1/3/1/8/131856381/duguvat.pdf
    • http://files.nadiautto.com/uploads/1/3/1/4/131438538/2262855.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/63890602632.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/robuxisezepisiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/98235646805.pdf
    • https://cdn.shopify.com/s/files/1/0436/2806/9017/files/basic_english_grammar_azar_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/nuselejebifulozameka.pdf
    • https://cdn.shopify.com/s/files/1/0440/3747/2421/files/50674990268.pdf
    • https://cdn.shopify.com/s/files/1/0432/0624/6557/files/98080262094.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0528/files/20447503063.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/54928705774.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/75730422235.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/18083177200.pdf
    • https://cdn.shopify.com/s/files/1/0440/7502/4549/files/daxavixozigitufutaro.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/butasawowagisejut.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_off0000a056.bin
6bccb8cd4262da023aa47fad9b500952d621b4d624ab9334308a5903b72ccd2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA056 5552 bytes
font_01_sfnt_off0000b335.bin
0b952d9a534cd4c08f4239c468e54497f91cd77f5ce807627bc812d10f5205e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB335 13824 bytes

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