Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2896c38fc4834b3…

MALICIOUS

PDF

41.2 KB Created: 2020-08-14 10:56:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d02627e050e698a167a182fe7040571 SHA-1: 82e412214562f8cdf269a980549b665038ae0fed SHA-256: e2896c38fc4834b328fbf5292859fa56bdda26cede50f3ab06bfc655b63df016
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body also contains the same URL, suggesting a lure to download content. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content. The primary malicious URL is 'https://ttraff.com/wb?keyword=crooked%20kingdom%20online%20free%20pdf'.

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=crooked%20kingdom%20online%20free%20pdf
    • http://pemiwetu.bowleyconsult.com/uploads/1/3/1/8/131857315/vanufonup.pdf
    • http://files.nikigrewal.com/uploads/1/3/0/7/130776591/sarozolibiniwafaf.pdf
    • http://files.collegiatelearningcenter.com/uploads/1/3/1/0/131070394/mubevejekebe.pdf
    • http://zuwiraga.themonkeysbanana.com/uploads/1/3/1/6/131606227/7678651.pdf
    • http://files.llamasdelsol.com/uploads/1/3/0/9/130969774/gerakirisomujosu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/bakery_shop_game.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/audit_procedures_for_fixed_assets.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/givazukavejabexam.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7804/files/lives_of_the_prophets_anwar_al_awlaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/alejandro_dolina_libros_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/structure_and_adaptation_in_plants_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/aprender_a_dibujar_animales_paso_a_paso.pdf
    • https://cdn.shopify.com/s/files/1/0439/3543/2859/files/95693023147.pdf
    • https://cdn.shopify.com/s/files/1/0438/9535/7595/files/nuwaxuzisinejo.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_off000064ac.bin
e7297b4239617e47b7f728b30d01716fc314880e32430b1ad80b5a635dd8d3e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AC 4940 bytes
font_01_sfnt_off0000756a.bin
a97b9d7936008e4d15b2965d2432e87f8f9eb4b688b25e656647daff20a4df3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x756A 10204 bytes

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