Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f05ccf3e868ea50…

MALICIOUS

PDF

40.1 KB Created: 2020-08-24 16:12:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f1709d3a3f9d55ade0f8de54efa9d60 SHA-1: b3433076f179659a2f4d42ce48642c6dde0da728 SHA-256: 2f05ccf3e868ea5001c43767d34f41f808fb30e5cb6dbe7330ba1e3adeebd4d8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a PDF link farm, embedding a large number of external links, many hosted on shopify.com. The document body, though heavily obfuscated, contains the title 'Time conjunctions year 3 worksheet' and the malicious URL, suggesting a lure to a phishing or spam site.

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=time+conjunctions+year+3+worksheet
    • http://kagoj.artscollective.co.nz/uploads/1/3/1/6/131606271/barogazuxisaxivoze.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/78670912158.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/41348480966.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3277/files/tabonudawuvuwomobesi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/56180436498.pdf
    • https://cdn.shopify.com/s/files/1/0435/6089/4627/files/pufapamosojirokogila.pdf
    • https://cdn.shopify.com/s/files/1/0432/3521/3467/files/56345240418.pdf
    • https://cdn.shopify.com/s/files/1/0439/1531/3307/files/cable_stayed_bridge.pdf
    • https://cdn.shopify.com/s/files/1/0431/4411/8428/files/48931910423.pdf
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/fazurawatorewelobobi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/viribod.pdf
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/jadukewirolifu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/39801402932.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_off00005d87.bin
0144495b705dad5e55b44efb0a51f088f881f911ad56db5f6831273814e5dc88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D87 5452 bytes
font_01_sfnt_off00006ffb.bin
1eb10be1cb3b468a7a4a1ca94657257dc49c99e27fab2358c4dc438f612cbcc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 10592 bytes

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