Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c94d5d2303813b2…

MALICIOUS

PDF

42.1 KB Created: 2020-08-13 08:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96815b6b5ccba39e43a45d5beeea47e4 SHA-1: 26d3afd70462bfea9cfe17cf26447b62c857c7cb SHA-256: 4c94d5d2303813b24b0596e3ea81160a3f8966b46fbdc819b6415da71ed0d4f3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wb?keyword=order%20numbers%20worksheet%20year%202'. The document body also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is the most critical IOC, as it is likely the entry point for further malicious activity.

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.cc/wb?keyword=order%20numbers%20worksheet%20year%202
    • http://files.empowerptandwellness.com/uploads/1/3/0/8/130874169/nuvin_bakobalowelex.pdf
    • http://files.sidleystandup.com/uploads/1/3/2/6/132681295/1034485.pdf
    • http://files.libyauprisingarchive.com/uploads/1/3/1/0/131070702/2710dc400ed0a.pdf
    • http://files.cyrphotography.com/uploads/1/3/1/4/131454766/nosupanim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83971047952.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/kileluvenatogonojima.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7805/files/66126342028.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/proyecto_arquitectura_sustentable.pdf
    • https://cdn.shopify.com/s/files/1/0436/0581/9550/files/terumul.pdf
    • https://cdn.shopify.com/s/files/1/0430/5498/9466/files/is_sam_smith_married.pdf
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/dikaxiwafejenatimupudur.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdf
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/62255181205.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/kozikopatojifon.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/85629238277.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_off00006643.bin
34eb8a5a3094cb60aabe24c2d7d40a19b0070a3416c3b4eeab8d8e694769c1ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 5588 bytes
font_01_sfnt_off00007928.bin
34b361b22d727ddae1926d4985093dd2d43001665b7cf4dabc439e2a124bc87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7928 10120 bytes

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