Malicious PDF — malware analysis report

Static analysis result for SHA-256 765a51eb7bbd845f…

MALICIOUS

PDF

37.2 KB Created: 2020-08-21 06:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8af22e7c4e80523a0e3f7ab1703e2039 SHA-1: 5d0c1a2469d95d3111f14bd9a3685f7191b8b0e3 SHA-256: 765a51eb7bbd845fefd9e4a19251a43fe8115bfc39ce58ceaaf0b58d2fd509d9
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=burwell+livestock+market+report', is flagged as a known malicious redirector. The document body contains garbled text but includes the same suspicious URL and a link to a Shopify-hosted PDF, suggesting a potential lure or content delivery mechanism.

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.ru/pify?keyword=burwell+livestock+market+report
    • http://files.muzictomyears.net/uploads/1/3/0/8/130874676/37aae08.pdf
    • http://vitabon.okobojiinterlake.com/uploads/1/3/1/8/131856725/pufavixa-tupagudiraside.pdf
    • http://botevefev.cosmicsistershop.com/uploads/1/3/2/7/132712237/4c47ecdde78.pdf
    • http://files.beanoartshop.com/uploads/1/3/1/4/131454620/rulenowutodal_risexabukim_povufefevulek_zilimewenefesu.pdf
    • http://novep.magicandfun.co/uploads/1/3/1/8/131856374/750099a3e768.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/numejisejarufutesuxeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/javascript_string_empty.pdf
    • https://cdn.shopify.com/s/files/1/0437/5383/2609/files/phonetic_alphabet_file.pdf
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/83599115508.pdf
    • https://cdn.shopify.com/s/files/1/0437/3318/8762/files/92781934030.pdf
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/16877577929.pdf
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/13924833997.pdf
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/61814317995.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/76299462237.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3778/files/executive_administrative_assistant_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/8846/8385/files/77453228493.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_off00005332.bin
080edc7f3202c92b97fecc2a90ad7468710a34e06eb43183e34fb28b16740f7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5332 5344 bytes
font_01_sfnt_off00006564.bin
58e8590d5ac2e49a8fd807d7d69a4a1eaddfde6b3d38c923c60458d2fc094b89
pdf-font-stream PDF embedded font (sfnt) at offset 0x6564 10116 bytes