Malicious PDF — malware analysis report

Static analysis result for SHA-256 296a38260ab03836…

MALICIOUS

PDF

51.0 KB Created: 2020-08-02 19:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 650d5b8b33308938683ac9829b5e4209 SHA-1: 5e120cd2cccc6b307256ba408b140cb54c2a490d SHA-256: 296a38260ab038363030f66e27a3eec5bcf9172b2bd0253f9706d10d9e6bd4d9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking URLs, suggesting an attempt to lure users to malicious content through a deceptive link farm.

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=nginx+performance+tuning
    • http://files.yvesalizahno.com/uploads/1/3/0/7/130776498/ginetuzenezume.pdf
    • http://files.petersburgchurchofchrist.org/uploads/1/3/1/0/131070597/4883839.pdf
    • http://files.easyway-it.com/uploads/1/3/0/8/130813696/ruladuligave.pdf
    • http://files.jakob-lorber-australia.net/uploads/1/3/1/3/131383727/bininagapis_dawuk_vugix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/96308392369.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/6981/files/juleb.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/nedubejijaxejunubosagike.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zinigezumapafukutogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/65479835340.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/3000/files/vakubemawejivusizitijaku.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/zelimapazarawubazugixabiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/96514327583.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/rateg.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/77095095922.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2965/files/xamafababifotivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51108684678.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_off00008470.bin
2dca5ddfe4443baf5f1fc984f6eae63d5a305236b1b7c2db5708a7fa74e6681f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8470 5164 bytes
font_01_sfnt_off000095fd.bin
0ca037a25718a21f615919e101866396639bf04b100f2fa95bc7469efec1565d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95FD 12708 bytes

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