Malicious PDF — malware analysis report

Static analysis result for SHA-256 d16f9a1c970e8673…

MALICIOUS

PDF

34.8 KB Created: 2020-09-16 19:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 685f30c00321b744ccabcf8c717fe5bc SHA-1: 1a1f682b717fbe9af06217f3daeef008cfb35d18 SHA-256: d16f9a1c970e8673a4839e30ba3aa0a425969206453be44bd09cc186957e75db
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify and other file-sharing services. One of these links, 'https://ttraff.me/wix?keyword=mario+party+5+rom', is identified as a malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. The document body contains garbled text and a reference to the Mario Party 5 ROM, likely a lure.

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.me/wix?keyword=mario+party+5+rom
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/2241293980.pdf
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/7825667371.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/human_gametogenesis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4673/9866/files/addendum_to_rental_agreement_template.pdf
    • https://471c3ec5-2aa8-4503-927f-4577f992a413.filesusr.com/ugd/cb2bed_da466a8286414b29aecfac4fdd8da2ba.pdf?index=true
    • https://940b018c-2f99-4781-9808-5b77cd3e7a18.filesusr.com/ugd/33a2e4_1fb5092c062c43ee811991bfc16683fb.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/gabidudolezirovepoxufi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/mafivodezuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/bewifekixotaxer.pdf
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/dumiponogeripet.pdf
    • https://8d94b0a8-b82f-42e1-b594-d2315a26aa50.filesusr.com/ugd/29c71c_49d5a9c3338d4b62ae9720d16424fc66.pdf?index=true
    • https://cea7ed8b-7461-4bbe-8163-37b7e8562ab7.filesusr.com/ugd/eb4c03_567718c1df3240a1b7bcac5b4a8494f6.pdf?index=true
    • https://a29039ef-3102-4bc1-a5a5-7ff5d0246ffd.filesusr.com/ugd/911c12_85c6815649304b2aaf0caebcedc9c080.pdf?index=true
    • https://ef3a7c03-e00b-4ace-82e0-26148360d28e.filesusr.com/ugd/6f9b04_4f52a69043b3480cb59d90c362d608ed.pdf?index=true
    • 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_off000049fd.bin
a70fb11900075a3e40651e289992f76411be287b9ad5631edc3643f3b03aa0d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49FD 4988 bytes
font_01_sfnt_off00005af7.bin
5fe42f684fd4e2c0e9a4d50e6e9b2b5170a0b8936a05e4ef7e519958b072060d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF7 10616 bytes

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