Malicious PDF — malware analysis report

Static analysis result for SHA-256 79e39f6ca37dc6b1…

MALICIOUS

PDF

40.3 KB Created: 2020-08-17 00:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 667ad2d28393e203a16d4d87c1bfb07e SHA-1: a493a0461b63d4410fc050e27e2d144f6ada513d SHA-256: 79e39f6ca37dc6b10ecb9d7ccddb98ab8cda307869b991c8bfb513052dd3fb3e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=oregon+coast+bottom+fishing+report', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to external content. The primary purpose appears to be SEO manipulation or redirection to malicious sites.

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=oregon+coast+bottom+fishing+report
    • http://mororuk.rllanhamhomes.com/uploads/1/3/1/4/131438428/527491.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xutuxajaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/memokolobitolowenoro.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/99328470840.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/78123478030.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/85423188570.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/wopud.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/47308050139.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/c_xml_to_json.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66923604261.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_off00006006.bin
2b3e35ff538fce120ded29fde85d2d6c8a2a19b63cca0ab93790f00c14e57200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6006 5564 bytes
font_01_sfnt_off000072c1.bin
acf1894315add6420175607d473170e4092a9400f72cb3c6b8dd0a2bb7f14a40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C1 9864 bytes

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