Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f88963cef6fae5…

MALICIOUS

PDF

35.8 KB Created: 2020-08-23 13:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6581e00bf7b32c5bc52eb33b75112b0d SHA-1: 649302db18141f9b34bf075d6b4495a5f0d6b559 SHA-256: 95f88963cef6fae5544beab225f0b309185684525519b90a869bbe578b7b7415
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.ru/pify?keyword=cowan+lake+fishing+report+2018, which is presented within a document body that mimics a fishing report. The document also contains numerous other links to Shopify-hosted PDFs, likely as part of a SEO poisoning or link farm strategy to obscure the malicious redirect.

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/pify?keyword=cowan+lake+fishing+report+2018
    • http://files.newlifetempleretreats.org/uploads/1/3/2/7/132740296/544ea31e.pdf
    • https://cdn.shopify.com/s/files/1/0435/8239/0435/files/15213514390.pdf
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/viluzejit.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2629/files/aniara_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9566/files/wojopetudogokuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/human_physiology_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/0541/7371/files/rudderless_imdb_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/78724970825.pdf
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/dixod.pdf
    • https://cdn.shopify.com/s/files/1/0435/3117/4043/files/nolodedoperomenowo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6612/2662/files/68566106396.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/girupuwulebizi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/logewedivumo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/dukujoruf.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_off00004d81.bin
8965ddddb8b223229f8cf9c925ef8739f0eeb7a05f61a197d42b99f4b1ac422b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D81 5744 bytes
font_01_sfnt_off00006126.bin
e557bc56881ab382b6814dff25b749d5b6958c42059ce057ce850e48b87aedf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 9792 bytes

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