Malicious PDF — malware analysis report

Static analysis result for SHA-256 584fa54d61d009a6…

MALICIOUS

PDF

59.6 KB Created: 2020-08-02 22:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73eaded71fd2dd231cdfb371451a67a0 SHA-1: e0b7cdfea6e721d274905a50094696f95197afd9 SHA-256: 584fa54d61d009a6af023bf0baca6e1a02d35679e4ec38b6a524baca5fa77be2
120 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous other PDF files, with a primary link to a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that this document is designed to redirect users to malicious infrastructure. The embedded URL https://ttraff.ru/pify?keyword=ft+video+fem is the most critical IOC, as it is flagged as malicious.

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=ft+video+fem
    • http://files.davescucina.com/uploads/1/3/1/3/131384335/zupesurisemide.pdf
    • http://files.heillandigallery.ch/uploads/1/3/0/8/130814529/xezogeduwijedepitet.pdf
    • http://files.barryboycephotos.com/uploads/1/3/2/6/132696598/fekofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/jovin.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/bokemegilezitakozozalaled.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/69113292362.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/jejex.pdf
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/14400864576.pdf
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/bright_house_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9724/4316/files/17665589030.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2106/files/xebonaxujuni.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/30517881506.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9208/files/9098237370.pdf
    • https://cdn.shopify.com/s/files/1/0440/7099/4085/files/1682674870.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/fapudewojenufaxu.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_off0000a393.bin
5ec1c1ea2d8c9c941aa30a8e01c2c00b3cc0aaa10be16c8a5cd389b67fb9a474		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA393 4552 bytes
font_01_sfnt_off0000b30d.bin
f75b95f2c9f6e358e2771b53dbefb71df69c664491c936d3b10fbd632d3ebe66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB30D 15044 bytes

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