Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a6657ca5becace…

MALICIOUS

PDF

42.7 KB Created: 2020-08-29 17:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78586e1aaa2b7b994e034fca16fea0cd SHA-1: a7d4a8091ecd2af5ae1abc6b8acdaf61cf30b620 SHA-256: f5a6657ca5becace74c1e89cfabe0c3134e147c0159deb1552317083bd54c2fb
120 Risk Score

Malware Insights

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

The PDF file contains a lure referencing a "Crocs size chart" and embeds a significant number of links. One of these links, https://ttraff.cc/wix?keyword=crocs+size+chart, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to direct users to malicious content, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct payload execution.

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=crocs+size+chart
    • https://static.usrfiles.com/ugd/b8c837_b8aeafbef4f54d0883ca3820e25ac78c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ae687dded894163a8793a6b9aac9a69.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1dfa2099d0c4f6b800eb0b7ddb1a480.pdf
    • https://static.usrfiles.com/ugd/cc089a_60de64c0f4ae4f9caa7fc4024b63e7f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_9bcecb7d8fdf497e9ad313e42fbafd4d.pdf
    • https://cdn.shopify.com/s/files/1/0433/1244/7652/files/atmananda_krishna_menon_atma_darshan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/23232333613.pdf
    • https://cdn.shopify.com/s/files/1/0432/8688/8612/files/56875257257.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/tusobifofu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.pdf
    • https://cdn.shopify.com/s/files/1/0435/2891/3055/files/suzeposulababiparu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5864/0549/files/merriam_webster_s_medical_dictionary_new_edition_c_2020.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_off000061a4.bin
b382777a571d0c26eb220c63639339dfeeb3822f5ee270cf2687cc042e813a13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 4808 bytes
font_01_sfnt_off000071f2.bin
a0c405ccf6c235325484571a57183d553cee79f8909b76508e7a58a3dc03420d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F2 14248 bytes

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