Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fdc69d2f9c6778b…

MALICIOUS

PDF

85.6 KB Created: 2020-08-31 20:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44eff224e3e505ca62bf3cacf046da50 SHA-1: e40ddf339188e494f009d718745c84eaeb9f3d97 SHA-256: 9fdc69d2f9c6778b9097cbc6b94f0085ae42d2d5bad8913572f641c98ce50b93
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=metabolic+syndrome+criteria+2017+pdf'. This URL is used in a lure to trick users into believing they are accessing legitimate content. The PDF also contains a mass external PDF link farm, indicating a potential SEO poisoning or link-farming tactic to distribute malicious content. No scripts were extracted from this sample.

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=metabolic+syndrome+criteria+2017+pdf
    • https://cdn.shopify.com/s/files/1/0429/1510/2876/files/wikowiboxarej.pdf
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/mufiwadudiwujemej.pdf
    • https://cdn.shopify.com/s/files/1/0428/5962/6655/files/todajo.pdf
    • https://static.usrfiles.com/ugd/726ec9_fd3f203ffc2b4e9facdf467f5083ca6a.pdf
    • https://static.usrfiles.com/ugd/409ca8_5cd1625949c54ae4bc7ca3c647bf08ae.pdf
    • https://static.usrfiles.com/ugd/e73fea_f726441f46c4402ea0a1103a4abfa5ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_dbaaeef765e44aec8c019e6d1b63adac.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4b728b8f34e4bc4b63c6ee87bb3e84a.pdf
    • https://static.usrfiles.com/ugd/9f6a24_e7704854f6074626b244e250069e8e13.pdf
    • https://static.usrfiles.com/ugd/a4e402_2f44e2d96ed14e3f9dc0f30a21405d71.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfa4bfd4d8014aec97212927136faeb3.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/calculus_early_transcendentals_briggs_cochran.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/9999052261.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/93438869732.pdf
    • https://cdn.shopify.com/s/files/1/0437/9246/6080/files/vawepavetixopezan.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_off0001019c.bin
db87c37363caf5f2e3b221eb964ff197a8c8f7ff57cb9c38effa43497a6695ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1019C 5952 bytes
font_01_sfnt_off000115e2.bin
c11ee47bd84890e1f02d98a0f873fa5dd6bd4ffc28b08e265b290a26a1e10c58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115E2 16472 bytes

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