Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3514dd0bb87d14…

MALICIOUS

PDF

51.3 KB Created: 2020-08-23 21:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93a3ae5d17995a637f2fde34a9e6f5e2 SHA-1: 5de4abde2d267c97c091cd0ed013d57bc4c7cf21 SHA-256: 9d3514dd0bb87d14461f4c6afd473b9765d28c3b3cadfc560db12e4db4da56e6
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=histogram+maths+genie+answers'. The presence of many external links, including those hosted on Shopify, suggests an attempt to distribute malicious content or conduct phishing operations by overwhelming search engines or users with links.

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=histogram+maths+genie+answers
    • http://files.theholycatholicchurch.com/uploads/1/3/1/3/131383842/fudoz.pdf
    • http://negoxu.ahbuzicustom.com/uploads/1/3/1/3/131380177/boxuganuber-noxuladekoda-masexit.pdf
    • https://cdn.shopify.com/s/files/1/0434/5020/4327/files/video_dari_link_url.pdf
    • https://cdn.shopify.com/s/files/1/0433/4505/1797/files/kakif.pdf
    • https://cdn.shopify.com/s/files/1/0431/6902/2109/files/94763690364.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/suzigobovonamobegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/pugapuzedefapotedev.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/fegagogaxiromitedomesobew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/91104508292.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/47075410237.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/56912938362.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_off00008a51.bin
bf9d05cd23ac9178ea18b5ac5074d6005e04a09b098e01f6e290234577a3e1e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A51 5120 bytes
font_01_sfnt_off00009ba0.bin
f7ac4d023807097b579da08a80559a760e3cabb3a54ff4ac7b79f8005f9d86de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA0 10736 bytes

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