Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2a84cf6a045f99…

MALICIOUS

PDF

44.7 KB Created: 2020-08-25 14:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50446ecb19362c2a47d9cc9ee2695dd7 SHA-1: bdcb6b378848052c6f4dc0905de6d528dadf2a72 SHA-256: 9b2a84cf6a045f99310be7994d6d3e22c0f264907c8164ca3cc9069a5be75b63
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Top 3d games for android free' and the malicious URL, suggesting a lure to external content. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt.

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=top+3d+games+for+android+free
    • http://porusixu.whyhellogreetingcards.com/uploads/1/3/0/8/130874540/01e8ed093721246.pdf
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/conqueror_s_blade_guide_glaive.pdf
    • https://cdn.shopify.com/s/files/1/0439/0957/8904/files/juxejigakumumavikavijuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/21388632610.pdf
    • https://cdn.shopify.com/s/files/1/0437/8807/5159/files/pals_provider_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/79616748679.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/catalogo_de_cuentas_de_una_empresa_comercial_el_salvador.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/68368340498.pdf
    • https://cdn.shopify.com/s/files/1/0434/3844/0604/files/26969066344.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/40573906106.pdf
    • https://cdn.shopify.com/s/files/1/0436/4910/6080/files/69255468996.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/rujuporazimobodoge.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/gegodonomidutigivejatewus.pdf
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/bedoxofabarenigeket.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_off00007138.bin
1b83d10d6becac17f05ff6d5aae953622065e189cf66b73a6d1e2c89b75fe689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7138 5440 bytes
font_01_sfnt_off000083a6.bin
619556bf8258ba96295ca5614bd4b8214188f9e0f8c34f7586d3c0fad68050b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A6 10120 bytes

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