Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d3121ae415cf06…

MALICIOUS

PDF

48.4 KB Created: 2020-08-07 01:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71f27176a41a266daa7f3d9706125a4f SHA-1: 8e20c0442d7f5108838ac431029eca256299a9fd SHA-256: b1d3121ae415cf06098ff491811f5ce6d3a591e4242546a54475e416b808ced8
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.com/pify?keyword=agile+principles+patterns+and+practices+in+c+pdf, which likely serves as a lure to download further malicious content. The document body, though heavily corrupted, contains fragments of the malicious URL and references to PDF downloads, reinforcing the social engineering aspect.

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=agile+principles+patterns+and+practices+in+c+pdf
    • http://files.rwgroves.com/uploads/1/3/2/3/132302859/xuzugoj.pdf
    • http://pepag.laurajohnsonmarchisella.com/uploads/1/3/1/4/131452922/a65825cd69a.pdf
    • http://files.activatinghistoryatduke.com/uploads/1/3/0/8/130874639/ce0f89.pdf
    • http://nolewox.triadmarketplacenc.com/uploads/1/3/2/6/132681352/levigijenad.pdf
    • https://cdn.shopify.com/s/files/1/0436/1958/2110/files/kafakamuburolokanelulife.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/8044168634.pdf
    • https://cdn.shopify.com/s/files/1/0430/2526/8889/files/loctite_270_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/4016/9384/files/36050484291.pdf
    • https://cdn.shopify.com/s/files/1/0432/1011/3186/files/20031563253.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0589/files/33396901052.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61403973964.pdf
    • https://cdn.shopify.com/s/files/1/0427/7751/0055/files/ff12_best_party_setup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/tewazefoxoxalatewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/zevajosomazamefitubemenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/pulizowelokobozubawiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/wosojebujanewijiromiviv.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_off00007d43.bin
f3752cf7f9425189cf1751951e5fb20fa3c5a31551e751587e7abc349b5a558d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D43 5312 bytes
font_01_sfnt_off00008f6f.bin
c6c64bfc5f812e9e87f0a77d2fcb57e322f62b731d0a264d039baf94f78b36ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6F 11244 bytes

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