Malicious PDF — malware analysis report

Static analysis result for SHA-256 a675ede23cdf6ba4…

MALICIOUS

PDF

58.6 KB Created: 2020-08-07 15:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69c5912c6bf0f3bab014b06c22bd4eb9 SHA-1: 5bf124708bc91fef26e8915bacbca5b143278bd9 SHA-256: a675ede23cdf6ba48efd15789711a8a345f2affa96e9656c74441d3c8efd7458
120 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous external PDF links, many hosted on Shopify. One of the primary links redirects to a known malicious infrastructure at 'ttraff.ru'. This indicates a likely attempt to drive traffic to malicious sites, possibly for phishing or malware distribution. The document body itself is heavily obfuscated and contains the malicious URL.

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=catabolism+of+heme+pdf
    • http://rudasij.hilaryshomedaycare.com/uploads/1/3/0/8/130814238/xuladuj-xiwofilod.pdf
    • http://files.sevengatesbirth.com/uploads/1/3/0/8/130874329/0bf8444c06b98.pdf
    • http://files.dayofgrace.org/uploads/1/3/0/8/130814432/6342674.pdf
    • https://cdn.shopify.com/s/files/1/0430/4607/6565/files/12988935523.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/16797260314.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/39446752580.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/11316842479.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6124/files/bodyboss_method_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91337380597.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/jidiwirefibe.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/67546747438.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxasukazojolivuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.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_off0000a6ee.bin
d039c6c1dec6c5e832bfea9bdaad356cd9232b1863fd823a530d579dfbf9e659		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EE 5232 bytes
font_01_sfnt_off0000b888.bin
d788fc6214b619fca9b505920a406362e9fea4aa12216689280a319b1e0d4d7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB888 11028 bytes

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