Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db6ce4e52a00d09…

MALICIOUS

PDF

48.1 KB Created: 2020-08-06 14:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 496cfbd932640a5a4519c0ee6ddd3c66 SHA-1: baf3ad7cafff6dfce31c62cee13683d36c431936 SHA-256: 9db6ce4e52a00d099b5d2fd129942cfb7ed82f94f77a93edfbd28decef1a9229
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=functional%20behavior%20assessment%20pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify. The document body itself is heavily obfuscated but contains the same redirector URL and several other Shopify-hosted PDF links.

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.com/wb?keyword=functional%20behavior%20assessment%20pdf
    • http://togazufi.nateveorganic.com/uploads/1/3/1/3/131384424/74fc1a.pdf
    • http://files.hydeparkgrenada.com/uploads/1/3/2/8/132814990/8b1f0a1e0a627.pdf
    • http://files.fieldofdreamshuntprogram.org/uploads/1/3/1/4/131452861/5811546.pdf
    • http://files.linapunischool.org/uploads/1/3/0/9/130969837/latuwiripudi-musujiwarazimuk.pdf
    • http://files.mayalissa.com/uploads/1/3/1/4/131408581/2586761.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/adjectives_prepositions.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3641/files/sistema_de_irrigao_por_asperso_convencional.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/south_african_cocktail_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xatet.pdf
    • https://cdn.shopify.com/s/files/1/0436/8020/2905/files/xuxalabax.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/83589258217.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/49452575593.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/biodiversity_and_its_conservation_mcq_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/60482990235.pdf
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/74415767586.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_off00007d5a.bin
f660ddc16c391a46ca958275c7a8cd6590202329ac8643d63ed9632b22c7d2a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5A 5552 bytes
font_01_sfnt_off00009010.bin
1403a66f52831b8ee8cb044c1a6fd61a4b3e2c015a99e775331c65e6f929863d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9010 10516 bytes

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