Malicious PDF — malware analysis report

Static analysis result for SHA-256 db39d64107c2c1a6…

MALICIOUS

PDF

32.5 KB Created: 2020-08-15 20:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6d3deca94b4193b35570fa241fd3e14 SHA-1: 5db84a4ed616480d693fdff5d2b4cf331722c599 SHA-256: db39d64107c2c1a682da492b4563800b4047a57d54e670492b502157537176b9
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=halloweentown+1998+full+movie', which is a known malicious redirector. The PDF also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com, likely to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=halloweentown+1998+full+movie
    • http://files.hushupclothing.com/uploads/1/3/1/1/131164202/5522390.pdf
    • http://files.clarinetrepairs.org/uploads/1/3/1/0/131070476/ruwujirasalojejela.pdf
    • https://cdn.shopify.com/s/files/1/0449/0035/2167/files/zaruwejijupugi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/76682170338.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7319/files/vilefo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/vejaborotilaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/favapumabaforusowijogiba.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/99246421237.pdf
    • https://cdn.shopify.com/s/files/1/0435/8511/0175/files/firotawonosas.pdf
    • https://cdn.shopify.com/s/files/1/0437/9633/2705/files/adam_smith_economics_book.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_off000042ce.bin
3ca9906dfb4a41f2ca5b1f5e758604d30c81b3d9114fb85de87c051cd27726de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42CE 5152 bytes
font_01_sfnt_off0000546c.bin
8d682f93448e5cf474b31bce6ae1be9d81cb9af4972f7ba5f74da5b60f532ca0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546C 9708 bytes

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