Malicious PDF — malware analysis report

Static analysis result for SHA-256 83bfd80301fb0f3b…

MALICIOUS

PDF

32.7 KB Created: 2020-08-30 23:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67b82b2dcafafd65dc951d183732869f SHA-1: c9c4ac8e1d20e03edc6e8dc4daa86ce130c34cc1 SHA-256: 83bfd80301fb0f3bc44d8c4ca49c14d9a9cb92804ca234e2aba818cee9d4029c
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector at 'https://ttraff.cc/wix?keyword=anime+battle+4.+0'. The document body, though heavily obfuscated, contains this URL and other links hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting the user to malicious infrastructure.

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.cc/wix?keyword=anime+battle+4.+0
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/zokizebadulubex.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/13418379027.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/39690918402.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/73287876282.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7539/files/55395333164.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1107/files/xejimoxoruzovedej.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/11319314701.pdf
    • https://cdn.shopify.com/s/files/1/0439/7744/1438/files/adaptive_radiation_in_reptiles.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c92dc5782b14e0b80868bdc27535de6.pdf
    • https://static.usrfiles.com/ugd/b8c837_455e295a74104e64b1b901251d27e431.pdf
    • https://static.usrfiles.com/ugd/b8c837_33d8c61b388f47fc97ebbf1c00f5c01f.pdf
    • https://static.usrfiles.com/ugd/d94ae5_d26783bd688043f8b6424de5b7e5f82c.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_off00004425.bin
855ae7250b45f129bb04c66db8830bf99c39a65735eef63e2eb82356e5199612		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4425 4948 bytes
font_01_sfnt_off000054e5.bin
720625cf32140653e0a60c295c7c1806d0aeb18c0251ce4550da48575d85aac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E5 9812 bytes

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