Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc1900ce6036cef…

MALICIOUS

PDF

148.6 KB Created: 2020-08-22 02:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 608fa24816d62fdfd557484196a0308f SHA-1: 4ffcbcc98d0092e85f6b944c5af2b28784c16a18 SHA-256: dcc1900ce6036cefb4ad21aeebfae1d849d2d70ed9a0ddc155524ea2eebd37c3
60 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, 'https://ttraff.cc/pify?keyword=candida+treatment+guidelines', is presented within the document body, disguised as 'Candida treatment guidelines', likely to lure users into clicking it. No scripts were extracted, and the document body was heavily obfuscated, but the primary malicious intent appears to be redirection to a harmful site.

Heuristics 2

  • 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.
  • 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=candida+treatment+guidelines
    • http://jenaza.bryanadavenport.com/uploads/1/3/0/7/130776585/8180764d7aef47.pdf
    • http://files.baybat-edtech.com/uploads/1/3/1/4/131437443/bujibefixonam_pepubudibesu_jivamun_bumajejubatexo.pdf
    • http://files.skyfootgoddess.com/uploads/1/3/1/4/131406806/329971.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/99956374851.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/catheter_care_guidelines_for_nurses.pdf
    • https://cdn.shopify.com/s/files/1/0431/6318/9405/files/hall_ticket_irda.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/34837418752.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/jeopardy_questions_and_answers_for_seniors.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/lawevinifibewizusos.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/rpn_calculator_ruby.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/sufojuxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/kufivejofejutirogutamexan.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/51871086340.pdf
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/38367431042.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5457/files/simuwinog.pdf
    • https://cdn.shopify.com/s/files/1/0453/2525/4811/files/keguxuwe.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_off0001f90b.bin
858a6ad5066acd1789018399812581cb38d05f742d6ef8afd2140d42ed57ad69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F90B 5052 bytes
font_01_sfnt_off00020a1f.bin
4f1fbd4c0c66f213aae066871058ee64067a1c11dcd7f6ecbb712b992a1041e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20A1F 10656 bytes
font_02_sfnt_off00022eb9.bin
0312b61fc3a6ecbd749b968f662005aed93e9a07904535f38df0b52102374495		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22EB9 16272 bytes

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