Malicious PDF — malware analysis report

Static analysis result for SHA-256 d511723bb835d377…

MALICIOUS

PDF

36.6 KB Created: 2020-08-14 16:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48cc3f65b4f2efd77c37a148a76229e2 SHA-1: bfdf45a83fe98b6e93a4a08e7f4cb704002a21b2 SHA-256: d511723bb835d377f5e1ac7212701b60aacec270031185a1d7797b7876e38488
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to direct users to further malicious content. The document also contains a large number of links to external PDFs hosted on Shopify, potentially as part of a link farm to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=plastic+foam+core+sheets
    • http://files.adieinteriors.co.uk/uploads/1/3/0/7/130739490/levozowepage.pdf
    • http://files.medusamcgill.com/uploads/1/3/0/7/130776591/dojeb-romadafev.pdf
    • http://files.pwcs3.com/uploads/1/3/1/4/131454620/tededekuxavufusa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/27860930166.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/74608363892.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/zambian_mathematics_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magizokoluredofet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/91127095189.pdf
    • https://cdn.shopify.com/s/files/1/0432/8295/6443/files/lineroziki.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5265/files/cadbury_products.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/21554141812.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/82395929868.pdf
    • https://cdn.shopify.com/s/files/1/0437/7300/1889/files/alteraciones_leucocitarias.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/2020_calendar_printable.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/iv_admixtures.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/zuxijivevikizuxekebajobef.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_off00005214.bin
ead5b35f4332de565b12f1fe471bf8285682976efabce95ad9e4484335ab2987		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5214 5124 bytes
font_01_sfnt_off00006352.bin
4877443ad3a4f9fe5cef0eb4d9585b3dc555733347ce9c75b1cf0426f8d117eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 9984 bytes

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