Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e6dbb3662b3bd0d…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 11:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d7605e2a9b519cf674f773d0a892514 SHA-1: 0966f4c22979461dd44d1d6b9151f2facef2bc25 SHA-256: 8e6dbb3662b3bd0d2e236bfc143fbf62c8c112e28cd330dc486864800e29b7bf
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a PDF link farm. One critical heuristic indicates a malicious redirector link to 'ttraff.ru'. The document body, though heavily obfuscated, contains references to the same malicious URL and benign-looking PDF filenames hosted on Shopify, suggesting a coordinated effort to distribute malicious content. 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.ru/pify?keyword=cquence+performance+brakes
    • http://files.jordansh3d.com/uploads/1/3/0/7/130776266/6b56d9a.pdf
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/epson_perfection_v600_driver.pdf
    • https://cdn.shopify.com/s/files/1/0436/5346/4214/files/laxeguxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/72244908955.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/75065015516.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/nosuzevisefakuwedixi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5436/6877/files/bruma_finance_loan_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0462/2663/6954/files/indefinite_pronouns_worksheet_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/lajoweweko.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/24343441563.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/12578759726.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c39.bin
7dd82e629ed19f756d9caec8453723c9e27e3d8c0a07c806fb919c648c0862a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C39 5236 bytes
font_01_sfnt_off00006de0.bin
4ce9c2899d9cd83a308f793875f809114e7246dab0d362fe820dc230f0516c6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE0 10572 bytes
font_02_sfnt_off00009213.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 4324 bytes

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