Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5e3f0724235264…

MALICIOUS

PDF

38.3 KB Created: 2020-08-24 21:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74fd8dd3f47c6e2bb6512de5a220a64c SHA-1: 6f4da04a6bd0df6290ef3cefac088cbb8a43d531 SHA-256: 2d5e3f07242352640c1640f10ddc1792f3609d47c10cf86d4135d1d2bfb6863d
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with 26 external PDF links, many hosted on cdn.shopify.com. One of these links, https://ttraff.ru/pify?keyword=beavers+uniform+sheffield, is identified as a malicious redirector. The document body contains garbled text along with the malicious URL and several benign-looking Shopify URLs, suggesting a lure or SEO manipulation tactic. No scripts were extracted, limiting the analysis of direct payload delivery.

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=beavers+uniform+sheffield
    • http://files.housersmathpage.com/uploads/1/3/1/3/131384071/gixajozozinofi_lemazogatelotax_rufetotipenizig_guraluwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/xegepabal.pdf
    • https://cdn.shopify.com/s/files/1/0439/5198/0712/files/bolalepelujinosilakox.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/tavirob.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5089/files/polymer_biomaterials.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/kudujen.pdf
    • https://cdn.shopify.com/s/files/1/0463/3287/0817/files/direxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5172/8546/files/50823398257.pdf
    • https://cdn.shopify.com/s/files/1/0430/8375/9765/files/wolf_dress_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/libro_mordiendo_manzanas_y_besando_sapos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/trove_neon_ninja_build.pdf
    • https://cdn.shopify.com/s/files/1/0440/4789/2630/files/arrival_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_off00005884.bin
274462ed5145348c5926dcea3d7268c0c556eae3fd99b2040806c016ebf9e72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5884 5256 bytes
font_01_sfnt_off00006a3f.bin
cd7edb9092005d2ea3b7c60268ef6bf86e2f8d949b664f485df51511f33da265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 10072 bytes

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