Malicious PDF — malware analysis report

Static analysis result for SHA-256 c79111c411a6b2ff…

MALICIOUS

PDF

43.9 KB Created: 2020-08-19 00:23:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4705819ad0569509daa55f5f49de263e SHA-1: 0ccc6f0ffb528566b9a737cd70806b08a436ecb5 SHA-256: c79111c411a6b2ffc927c930a95ba5a8b56447c0228fbbffbd2409e318374c29
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.cc/pify?keyword=cctv+diagram+template'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the malicious URL and references to a 'cctv diagram template', suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=cctv+diagram+template
    • http://files.cninc.org/uploads/1/3/2/7/132740479/5324237.pdf
    • http://lumeru.idealformsnyc.com/uploads/1/3/0/7/130775505/giketetomokipa_zodeliromifas_tifumerixe_tinuwuzi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6353/1933/files/33843169403.pdf
    • https://cdn.shopify.com/s/files/1/0433/4456/0281/files/75946829286.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/kosiromelalajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/soxutaweji.pdf
    • https://cdn.shopify.com/s/files/1/0440/7230/4790/files/5286467653.pdf
    • https://cdn.shopify.com/s/files/1/0431/5922/4480/files/19189057851.pdf
    • https://cdn.shopify.com/s/files/1/0453/2695/8747/files/wexifokizo.pdf
    • https://cdn.shopify.com/s/files/1/0460/5755/4075/files/75770294773.pdf
    • https://cdn.shopify.com/s/files/1/0444/5673/8983/files/zewumalokepuve.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/93710440410.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_off00006299.bin
91cd918628ba3613513197308e229018d65e11347e6fad6c05e948c098f06c56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6299 4868 bytes
font_01_sfnt_off0000732d.bin
74955ad640ef2bed899a8e3b96bc726fdb260296d4dc2d34270ff8ca076a1069		 pdf-font-stream PDF embedded font (sfnt) at offset 0x732D 9944 bytes
font_02_sfnt_off00009515.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9515 4324 bytes

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