Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6688300d082d96…

MALICIOUS

PDF

40.9 KB Created: 2020-08-22 09:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 510c1646198b56f49ceed274df454e16 SHA-1: a3d457415cd35f5d65d5da0a7eff12ac089a49c8 SHA-256: aa6688300d082d961a8415cdb29f05a6e9f9de4dec02952d172bd01dc69f1cee
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely for SEO manipulation. The embedded URL https://ttraff.ru/pify?keyword=nice+guidelines+testing+for+chlamydia+and+gonorrhea is the primary indicator of malicious redirection, while the numerous shopify.com links are likely part of the SEO strategy.

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=nice+guidelines+testing+for+chlamydia+and+gonorrhea
    • http://files.yogilea.com/uploads/1/3/2/6/132695578/muvataretafaxuzamudi.pdf
    • http://patoz.adamvoss.com/uploads/1/3/1/8/131871479/tetixivilos.pdf
    • http://gogulubeg.garykearns.com/uploads/1/3/0/8/130814328/wisonep-lukonilabijof.pdf
    • http://files.countryrichfashion.com/uploads/1/3/1/4/131406068/facb73cad.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/why_arusha_declaration_failed.pdf
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/10788163106.pdf
    • https://cdn.shopify.com/s/files/1/0428/2646/5436/files/mixavejonuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/45287167704.pdf
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/59609598105.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34803766861.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9837/files/kiruket.pdf
    • https://cdn.shopify.com/s/files/1/0458/6579/5737/files/haryana_news_election_ki_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/85028706773.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/35563615121.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_off00006221.bin
94c0f129e6dbd5037db0ec32a5536fe73366d2fa613dbd1b3bdcc7e2a7a55da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 5504 bytes
font_01_sfnt_off000074b5.bin
0f6959c578c55ed65a557fb230a82ba634cf9f75b395e0a89e0217fd39ab2db6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B5 9920 bytes

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