Malicious PDF — malware analysis report

Static analysis result for SHA-256 27de4b97ffc7f6ff…

MALICIOUS

PDF

36.7 KB Created: 2020-08-24 11:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c1d3ec2ab7389478ea40326c61fb56a SHA-1: 7a2a99cb4a24becd3a29c74ca4f772cde403673d SHA-256: 27de4b97ffc7f6ff732c8b2c99aec25a193e398448cde2c6e7e47f30bd696861
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bed+bath+and+beyond+sheets+nz'. This URL is designed to redirect users to potentially harmful content. The document also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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/pify?keyword=bed+bath+and+beyond+sheets+nz
    • http://files.claytonbrowneortho.com/uploads/1/3/1/4/131410662/dufitarobodupivagoru.pdf
    • http://files.ladydragonslax.com/uploads/1/3/0/8/130873833/8db5618aa5.pdf
    • http://files.robynstarfield.com/uploads/1/3/0/7/130738615/bumajiberusiw_xebedupu_nosejutojox_sopevaliwus.pdf
    • https://cdn.shopify.com/s/files/1/0434/8972/2534/files/alligation_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/6004/3682/files/3431422264.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/aws_elb_vs_alb_performance.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/68357421793.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/adding_and_subtracting_fractions_interactive_notebook.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/80848856323.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/3684822355.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/zoboresumasabiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/fejaxid.pdf
    • https://cdn.shopify.com/s/files/1/0440/6503/0309/files/hollywood_thriller_movies_tamil_dubbed.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_off0000513d.bin
e8bde0806d7670b99c3da0f0d55bb4d1ef4f30b578c38268b54842c0099560c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x513D 5124 bytes
font_01_sfnt_off000062b2.bin
7203abfc30b4bb000384d2e8db0fad8773d50e5af6e8741b383406557977b868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B2 10548 bytes

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