Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4c6fb2c789129c8…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 22:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 454ef13c0c01157b1288e7484aa7c604 SHA-1: 750a619aed902f66b566f88c05cf311de762a1e8 SHA-256: b4c6fb2c789129c890447fdc943584aabf2009599906c89e9c551c3a15f02185
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=can+satellite%2528+cansat+design+manual'. While many links point to benign Shopify domains, the presence of the malicious redirector indicates a malicious intent to lure users to potentially harmful 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.ru/pify?keyword=can+satellite%2528+cansat+design+manual
    • http://xodusewot.kv-cleaningservices-uk.org/uploads/1/3/1/3/131398504/gipekowojopi.pdf
    • http://files.carlosvouking.com/uploads/1/3/1/4/131453086/522437.pdf
    • http://files.appalachianbreastfeedingnetwork.org/uploads/1/3/1/1/131164054/guzes.pdf
    • https://cdn.shopify.com/s/files/1/0448/1895/6449/files/cessna_152_instrument_panel.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9078/files/castrol_edge_professional_5w40.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/46790823988.pdf
    • https://cdn.shopify.com/s/files/1/0447/7786/5367/files/asset_integrity_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdf
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/gree_mini_split_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/66731684237.pdf
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/infrastructure_definition.pdf
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/geometric_construction_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/9053009873.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/catalogo_avon_17.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_off00006746.bin
3be17636ad13a723e566c82b0f2fbf26f792344f05e6f6a58b49d5e6b3f2f712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6746 5144 bytes
font_01_sfnt_off000078c1.bin
78b3825024c1aa5b6d5dfbff3148907eb3de108d039cee3795bd5dec854b4638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C1 9996 bytes

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