Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a6feed7de74845…

MALICIOUS

PDF

42.9 KB Created: 2020-08-16 16:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 814761073e876c4e5d5594a22e6bf322 SHA-1: 023445978916c6c66b53aa0dbde083b506a2d15e SHA-256: f9a6feed7de74845c83b5e277ee0efe691b44dbb01ac1a028d4e9858317b5643
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body itself is heavily obfuscated and contains the primary redirector URL, suggesting it is part of a link farm designed to lure users to malicious content. The presence of numerous other PDF links, many hosted on Shopify, further supports the link farm hypothesis.

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=voice+judges+dream+on+performance
    • http://files.primerentals.us/uploads/1/3/1/3/131398113/navolofijorexe.pdf
    • http://files.stephenhardie.com/uploads/1/3/2/7/132712139/wafamiwapul.pdf
    • http://files.southtownscatholic.org/uploads/1/3/1/6/131636990/3996155.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/adobe_illustrator_flowchart_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/22470849133.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/school_safety_agent_exam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/villa_lobos_bachianas_brasileiras_5.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/sabafopavugonogovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/63215707075.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/angina_instavel_e_estavel_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/fuvatamavevoravamuboro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cb9.bin
43c6a7e027b5b7574041f89fd799d41e9caf26e7d467803295d9f17e8660ee5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB9 5288 bytes
font_01_sfnt_off00006e90.bin
ec441634ac8ae6908b7a7f4346066c687c3b756201de54d0dafacdb24f56e795		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 9976 bytes
font_02_sfnt_off000090cc.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90CC 4324 bytes

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