Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cdb28872d8688ea…

MALICIOUS

PDF

42.6 KB Created: 2020-08-31 09:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51477617c2923c98b6868525243e5ec5 SHA-1: 8d480bf60e010ddafb53a67e29f57a9fe873d0fa SHA-256: 1cdb28872d8688ea273df4f578983c4d299433e5460e3f057505aab306f4d1ad
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=eero+mesh+wifi'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0435/3648/2458/files/3685966465.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting a lure to a malicious site disguised as a document.

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/wix?keyword=eero+mesh+wifi
    • https://cdn.shopify.com/s/files/1/0435/3648/2458/files/3685966465.pdf
    • https://cdn.shopify.com/s/files/1/0441/2761/7176/files/nagagogufalod.pdf
    • https://cdn.shopify.com/s/files/1/0432/1715/8312/files/great_lakes_sunlighter_spa_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/gamepad_terbaik_untuk_android_tv_box.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6149/files/tosujizakizezim.pdf
    • https://static.usrfiles.com/ugd/e73fea_313c5f23230a47a9a89a68d71b5cefb9.pdf
    • https://static.usrfiles.com/ugd/ac51ce_ddc62c73428043668ec1a13b9e577c19.pdf
    • https://static.usrfiles.com/ugd/b8c837_9de39514f661457f85d44fcf7b7d49b6.pdf
    • https://cdn.shopify.com/s/files/1/0437/2722/4986/files/definition_of_business_finance.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/il_canzoniere_petrarca.pdf
    • https://cdn.shopify.com/s/files/1/0430/5820/0730/files/43312230695.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/selewoximorure.pdf
    • https://cdn.shopify.com/s/files/1/0462/0019/3182/files/43759308515.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_off00006a0c.bin
196fd688477971ca52a9405c45c56a6c9c438fc7c1e316994700ef53aa359a2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0C 4816 bytes
font_01_sfnt_off00007a60.bin
290f23a7722b8039b25f6913085f3f2d8f81dc0064b684115a551fe55face4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A60 10476 bytes

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