Malicious PDF — malware analysis report

Static analysis result for SHA-256 d20b713b006c5e65…

MALICIOUS

PDF

34.8 KB Created: 2020-08-11 09:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c092312207ddf50ec6613900e0c72b4 SHA-1: c9abe5669459e383728fd500c05028f202e2001f SHA-256: d20b713b006c5e6565a73af38ca0fa8ee90c21054b618d00cad410d1de08ec00
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as educational content, specifically targeting 'everything maths grade 12 textbook pdf'. This link, 'https://ttraff.cc/pify?keyword=everything+maths+grade+12+textbook+pdf', is designed to lure users into clicking it. The document also features a large number of embedded links to other PDFs, indicating a link farm strategy to potentially obscure the malicious redirector or distribute further malicious content.

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=everything+maths+grade+12+textbook+pdf
    • http://files.alliancerestorationblog.com/uploads/1/3/1/4/131437649/vujemiliro.pdf
    • http://files.toppinggeography.com/uploads/1/3/1/6/131606672/fanivupono.pdf
    • http://files.aboundingfaithnj.org/uploads/1/3/1/3/131383771/xosorizin.pdf
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/xepexita.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/75936190516.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/ximim.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/tasedexiwapofowukixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/narokivosuxobasamevagup.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/bioenergetics_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/ashish_arora_books.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/zetesobokojoropenejunid.pdf
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/xukomuzapeno.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/surat_yasin_latin.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_off00004964.bin
4534d8df419acb66c4e3acb409d0748655e1a7ab5107e0dcd12e27119d515d17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4964 6000 bytes
font_01_sfnt_off00005dad.bin
a50530e979a0590cd148421c3b93ddbf1ed21bb0bcfdef2bbe0e8de3d5eaae56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAD 9600 bytes

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