Malicious PDF — malware analysis report

Static analysis result for SHA-256 c40d8db99a0a1b63…

MALICIOUS

PDF

32.2 KB Created: 2020-08-31 04:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 791acb911a84625069f7d9da3b7d0a1e SHA-1: eeffd68f3e40075c0422eb9a6f02460331146eef SHA-256: c40d8db99a0a1b632321082474f67382cc027deb7faaf0201ee184adca835ad8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=easycare+weighing+machine+online'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into visiting a potentially harmful site. The file also contains a large number of embedded links, characteristic of a link farm, further supporting the malicious intent.

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.club/wix?keyword=easycare+weighing+machine+online
    • https://static.usrfiles.com/ugd/b8c837_9d879c01657647f4bca53c28aa17a044.pdf
    • https://static.usrfiles.com/ugd/ff2e72_cd69ef3de35c40cb8599c77ed3c764be.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfbe03bef4f94b789c901e4f3cd1ffa9.pdf
    • https://static.usrfiles.com/ugd/b8c837_5eee86ec470147e69c592b2fc9c5d367.pdf
    • https://static.usrfiles.com/ugd/77eba6_d9e64c6606c343398dce0e589c58039d.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/apple_cider_vinegar_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/47578848508.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/powerpoint_2007_templates.pdf
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/56900549230.pdf
    • https://cdn.shopify.com/s/files/1/0432/6172/2788/files/99323425492.pdf
    • https://cdn.shopify.com/s/files/1/0461/8099/1129/files/metformina_para_que_sirve.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_off000040bc.bin
3fe0a30397b81839824dfb797d05c27a05c6b87b99853454523e5a0a52348651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40BC 5364 bytes
font_01_sfnt_off000052e2.bin
fa5b6f7202de409d0b425aff1d301ccda08b0ef24cbe8a1f0eab5db6838b786e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52E2 9904 bytes

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