Malicious PDF — malware analysis report

Static analysis result for SHA-256 7edeee745fd40e58…

MALICIOUS

PDF

46.1 KB Created: 2020-08-31 01:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9cd7616de9d3e289f3659450bac2ecd SHA-1: 663f0230b6abe1fe62ff6da8d720b32852aba1fa SHA-256: 7edeee745fd40e58b9ca03aeb7fa7037f5cdd89012937ea5f36fae61a43b143c
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for delivering malware or phishing pages. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to medication costs. The presence of numerous other links hosted on Shopify, while individually benign, contributes to a link farm pattern, likely for SEO manipulation to increase visibility of the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=hur+mycket+kostar+combigan
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/56641118172.pdf
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/zudawibepube.pdf
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/komokabibibipotiwupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/minecraft_city_rp_servers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0462/6009/3077/files/31492424744.pdf
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/7289039989.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/el_problema_del_alcoholismo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/business_process_modelling_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/rarunofazefixatowa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/liwegufidonizun.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/83745814658.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_off00006758.bin
068cdb8cdbb731068655d4f4df6053bfb38cad18ddc3e8eac3dc315c61f4bd80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6758 5236 bytes
font_01_sfnt_off00007910.bin
a222e66e91e69c5d8aa2c5bf6a4c11f2f71e14114d2bc75d0d10a2faed3265a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7910 10788 bytes
font_02_sfnt_off00009c36.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C36 4324 bytes

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