Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c68b1062409b352…

MALICIOUS

PDF

45.8 KB Created: 2020-09-03 22:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cac5469a9aae83689b698b828c1a5aa SHA-1: 82370fc80fbc41f896bb8dd8d8283b6070345eb3 SHA-256: 9c68b1062409b352665adb5949984ece80af61ce942829c01ba058004e39f53e
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.club, which is presented to the user as a search result for 'spore forming bacteria in food'. The file also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm techniques used to distribute malicious content. The primary malicious URL is the redirector, which likely leads to further stages of an attack.

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.club/wix?keyword=spore+forming+bacteria+in+food
    • https://cdn.shopify.com/s/files/1/0437/2001/6021/files/sparkle_brush_photoshop_cs6_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/dwarf_fortress_melt.pdf
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/bovoxezekusidexaga.pdf
    • https://static.usrfiles.com/ugd/87b9a8_9d59e2abcd454bf5bc663754c7ede144.pdf
    • https://static.usrfiles.com/ugd/b4609a_09f758a69e894fa1b755b3214199d3a0.pdf
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/42653554626.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3556/files/71895304555.pdf
    • https://static.usrfiles.com/ugd/3b5dd9_7f14fbfde7ff4219a056774d01b7a2fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_c59f01c313944bd89b6c6d5c60b9c983.pdf
    • https://static.usrfiles.com/ugd/bf650e_c891d1f9dffb4d00b7f9758bbb304140.pdf
    • https://static.usrfiles.com/ugd/270e53_bb6d1d69b124497cbeb939f8baede9ba.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_off00007559.bin
a439a63dc64fcb8d6df0210b6d09aa52c4e9a46b65e9cdb69520d50eb43e4df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7559 5508 bytes
font_01_sfnt_off000087fa.bin
d399ac394d159af3f54a0bbb77a8be20e87ce01baea709509fbdbc508929fcf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 10240 bytes

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