Malicious PDF — malware analysis report

Static analysis result for SHA-256 5793ccd45f2ee12a…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 22:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e98d0ce2afb00f06cc5709c5f5d72f4 SHA-1: 4735c056ba8d64790fa53d4ce8368cbcf5457c3d SHA-256: 5793ccd45f2ee12a61523c5a7015bd97dc3cc0d23ada983955d3db6b13e90089
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=oceanaut+calidad+de+reloj'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0432/5064/7204/files/liliwimu.pdf'. The document body, though heavily obfuscated, contains references to the malicious URL, suggesting a social engineering attempt to redirect users to malicious infrastructure.

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.cc/wix?keyword=oceanaut+calidad+de+reloj
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/liliwimu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/amd_chipset_970_driver.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/89896716527.pdf
    • https://cdn.shopify.com/s/files/1/0429/8588/1759/files/react_scroll_event.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/70112547537.pdf
    • https://static.usrfiles.com/ugd/b8c837_570843dfa00848aa8f001642ff081495.pdf
    • https://cdn.shopify.com/s/files/1/0452/8999/6450/files/guxitosifop.pdf
    • https://cdn.shopify.com/s/files/1/0438/3742/3776/files/zoduzizar.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/20237535596.pdf
    • https://cdn.shopify.com/s/files/1/0428/9521/2697/files/biweduvotoxunabiseruluk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/xowogono.pdf
    • https://static.usrfiles.com/ugd/badafb_fc1b527396c948879cee5df31901dc90.pdf
    • https://static.usrfiles.com/ugd/cc03df_d6d30238c7d542aeaada7665dd0da6c0.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_off00005678.bin
5b84a88e8bd77c43936f8bd165133ba9d1fc5f0665c85e8c430857e46acfc2ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5678 4860 bytes
font_01_sfnt_off00006707.bin
333e0376c3b77954f5f00cc182aae070c84beca1b37999f38c7eaba5fc17436a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6707 14976 bytes

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