Malicious PDF — malware analysis report

Static analysis result for SHA-256 53190dbcda084e78…

MALICIOUS

PDF

42.9 KB Created: 2020-09-02 10:11:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69210c8ba4e763b176176bf8403e7144 SHA-1: 9f15c3089ded7e2db4c8a34d680a6f701704a804 SHA-256: 53190dbcda084e78414a65264ef0afb808467d48deb0bad0473ff87025599457
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector. The document body and embedded artifacts reveal a large number of external links, many hosted on cdn.shopify.com, which is characteristic of a link farm designed to obscure the final malicious destination. The primary malicious URL identified is https://ttraff.com/wix?keyword=atl+btl+ttl+pdf.

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.com/wix?keyword=atl+btl+ttl+pdf
    • https://cdn.shopify.com/s/files/1/0465/0359/2104/files/guided_by_voices_bee_thousand_zip.pdf
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/natajiweserovaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1289/files/sales_negotiation_skills.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/bulawexogigabaveg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0437/8204/5853/files/duke_s_anesthesia_secrets_5e.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/chacha_nehru_image.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0818/files/ratol.pdf
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/book_to_learn_mandarin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/dowesakixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/70189248819.pdf
    • https://cdn.shopify.com/s/files/1/0431/6089/5650/files/97918279003.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/32602017363.pdf
    • https://static.usrfiles.com/ugd/dd6616_950a87c6348345539f2a6a0e8b68eca6.pdf
    • https://static.usrfiles.com/ugd/bb13a2_932e52fe01474b22a04b3f441867ddfb.pdf
    • https://static.usrfiles.com/ugd/a4d998_531c7aca6cbc49739889aabb3949533e.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_off00006d3f.bin
1e6f08ba77493a8bc249ffb7ca7e0f9d9280221cf9e8fdab1b420d0158662d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3F 4680 bytes
font_01_sfnt_off00007d3e.bin
5440b881f71563fbcbe8a5daccee8d9c7803e2961c65112a582f2e432a82d86d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3E 9932 bytes

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