Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cebb9c9813ee6d7…

MALICIOUS

PDF

37.9 KB Created: 2020-08-29 12:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f02751a5cae5cfaeeb08252f2557bbe SHA-1: 8e565c8670f7e6563192d9e681ea00d713862589 SHA-256: 9cebb9c9813ee6d7efb734b35662e02a4980df6ccd39f9214a10c4fde9afe716
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.ru/wix?keyword=michel+suas+advanced+bread+and+pastry', is flagged as a malicious redirector. The document body contains garbled text along with several URLs, reinforcing the idea that this is a link farm designed to distribute malicious content.

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=michel+suas+advanced+bread+and+pastry
    • https://static.usrfiles.com/ugd/b8c837_65ba19cc409b49969ad9f29e2f418f0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6e59eb4dbb846f589b48d741d55e5f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_33b346c0979a488581d3e6caddb636f1.pdf
    • https://static.usrfiles.com/ugd/c12414_75b118ecf3cc4e23b3588d709dc1f30a.pdf
    • https://cdn.shopify.com/s/files/1/0433/5081/8981/files/miwonofawekizo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/miguxudifotujarijo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/zenererexokipozuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/61701817490.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/vufugunelulugitid.pdf
    • https://static.usrfiles.com/ugd/b8c837_1abaf3a6c2874118b59002efce9736c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ec34bbad0a247158d57c69036110a79.pdf
    • https://static.usrfiles.com/ugd/b8c837_78dc4acaef3a41d4bac33137316ff669.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd761afde9dc46d5aa79391bae547ccc.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_off000053d4.bin
9e33af03455e3a20ba3a3a5814afa5156e81a0a1b83cdd0bdb3324afdfe827df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D4 5468 bytes
font_01_sfnt_off00006664.bin
b4fc53fb8da0c2214cf892d41bd2d698d95e066aac266a26d79579804eb50c12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6664 10644 bytes

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