Malicious PDF — malware analysis report

Static analysis result for SHA-256 c562f82da634518e…

MALICIOUS

PDF

47.7 KB Created: 2020-08-30 10:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 714ad8e91eaebcd4007f28efa7fa6747 SHA-1: f33dee011cf56bf6d5e9c1e3227825d6a51fea4b SHA-256: c562f82da634518e7dfc3baa93c7a391de510af3287c0f124aae95fe0ebc8387
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, references the URL 'https://ttraff.ru/wix?keyword=ode+to+joy+piano+notes+with+numbers', suggesting a lure to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, further supports the idea of a link farm designed to obscure the malicious destination.

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/wix?keyword=ode+to+joy+piano+notes+with+numbers
    • https://cdn.shopify.com/s/files/1/0437/2597/9797/files/14776295388.pdf
    • https://cdn.shopify.com/s/files/1/0435/3907/1125/files/83182414322.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/34474933462.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/fatca_reporting_1_ffi.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_9fb2035b56bd4b188496d83a04be7977.pdf
    • https://static.usrfiles.com/ugd/76de1a_d75d6fd3c61c49a9addd92e1bbb0357c.pdf
    • https://static.usrfiles.com/ugd/b7ed05_35fbdbba41104513afd5756f8bd4f10a.pdf
    • https://static.usrfiles.com/ugd/48d9a1_c3724dd3b12644bd92cc6ab7ad9961c3.pdf
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/tibivisotinobetomorewad.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/71241339426.pdf
    • https://cdn.shopify.com/s/files/1/0435/3730/1653/files/64322197310.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d80.bin
bc7f45172b12b407292c2fa6ce95a83c887254c57ddcf91837a75761bde68e1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D80 5604 bytes
font_01_sfnt_off0000706e.bin
500dd95146c1141993db01629cc1dbbe4828b99165e877e594b15d4535a498af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706E 2104 bytes
font_02_sfnt_off00007986.bin
831c356a697603517b4734af33baa704dda35288b689c4e726de3236c81782be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7986 9968 bytes
font_03_sfnt_off00009bdd.bin
cacce353daa52449aaa2dc03ff14e12d7f37b8e2e541d6bae97b449db5f5a003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDD 16248 bytes

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