Malicious PDF — malware analysis report

Static analysis result for SHA-256 5746a33ee30a9d8e…

MALICIOUS

PDF

36.6 KB Created: 2020-08-08 05:35:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adeec5df88ca5977ab1e29191e81dc38 SHA-1: c7060d4455800738267d988b224f5f79671517fb SHA-256: 5746a33ee30a9d8e6c3222f0ad18d7e93d55a0fc01bc2f38ff6bc86485273fc1
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary intent is to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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.cc/pify?keyword=ecological+economics+daly+and+farley+pdf
    • http://files.joanfenicle.com/uploads/1/3/0/7/130739214/gumepugurumowo.pdf
    • http://files.hempsteadgirlstf.org/uploads/1/3/1/6/131636700/pefor-xesekupol-kipobose.pdf
    • http://files.zion-top.org/uploads/1/3/1/3/131383247/556b8457d28f1.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/dowry_prohibition_act_1980.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/19889401755.pdf
    • https://cdn.shopify.com/s/files/1/0452/6279/9005/files/affiliate_marketing_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0434/7212/6117/files/surface_area_and_volume_of_rectangular_prisms.pdf
    • https://cdn.shopify.com/s/files/1/0437/9086/0437/files/40962075026.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/52030151807.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/55305843802.pdf
    • https://cdn.shopify.com/s/files/1/0429/3502/5830/files/bulletproof_diet_infographic.pdf
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/advanced_learners_oxford_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6383/files/31837061719.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/2062881675.pdf
    • https://cdn.shopify.com/s/files/1/0435/2173/6859/files/folibamuxuzalixibifo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/architectural_drafting_books.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_off0000540d.bin
1ee1706641702d22ee1bade7881bc52683cb68684ae909da0570219eda46776c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x540D 5532 bytes
font_01_sfnt_off000066d7.bin
8ceeec0c2533950da48dd1852f178bf15203cf70c4c8965ea2fe92730909f71f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D7 9036 bytes

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