Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe467c608c2dbd6f…

MALICIOUS

PDF

39.0 KB Created: 2020-09-14 13:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bfcdc066ae1067645c1b36746463bde SHA-1: fb31edafa2d7571e7a555ed769ab06a1d994ecbe SHA-256: fe467c608c2dbd6f295afc37931280cf2b6ea4bc1df318dc8a23e9fe4f9a262a
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised with a keyword related to a luxury brand receipt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger campaign to generate traffic through numerous external links, many of which point to benign Shopify URLs, but the primary redirector is malicious. The document body contains garbled text but includes the target URL.

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.link/wix?keyword=louis+vuitton+receipt+online
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/vitewuvugaris.pdf
    • https://cdn.shopify.com/s/files/1/0431/8773/2644/files/converting_fractions_to_decimals_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevaziretojigadogikoranab.pdf
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/7926022342.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/55415258870.pdf
    • https://cdn.shopify.com/s/files/1/0432/3619/6507/files/dvdvilla_latest_bollywood_movies.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1555/files/29296115193.pdf
    • https://cdn.shopify.com/s/files/1/0432/1257/0783/files/49648336957.pdf
    • https://cdn.shopify.com/s/files/1/0437/9728/2977/files/gofuruwopigunazoxetiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/56241741129.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/word_search_app_answers_movie_genres.pdf
    • https://static.usrfiles.com/ugd/e49726_903394fed5c14fc39929e05ac7d644b0.pdf
    • https://static.usrfiles.com/ugd/16879a_c079e1dd22e543fb9d6ee9b77a894790.pdf
    • https://static.usrfiles.com/ugd/c450b2_8e5e140fc99d4f168ee36a25a6420929.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_off00005293.bin
afacbba4ef6bef8eabe8f74e9b1a561c68a9c50eb713624fdae467e9a16b2d9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5293 4720 bytes
font_01_sfnt_off000062ba.bin
3c042dfee6026fb5dc0773a12c4f55f731808fbf859ba809c6694fe54c11ac75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BA 14500 bytes

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