Malicious PDF — malware analysis report

Static analysis result for SHA-256 b328501870f05b05…

MALICIOUS

PDF

43.4 KB Created: 2020-07-28 01:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 758103e5db07369bc0c9120431c09b8c SHA-1: 6084038f5baba2674c37a3501978cc2057a1d020 SHA-256: b328501870f05b05dc0d19571fa74f3454a9e94cb12a023bba733de7af2a7441
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 external PDF files hosted on various domains, including a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. The primary malicious URL identified is ttraff.ru, which is flagged as a malicious redirector.

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=song+start+again+by+onerepublic
    • http://files.2die4gourmetsoups.ca/uploads/1/3/1/6/131637570/fonewefiva.pdf
    • http://files.harmonyfcr.com/uploads/1/3/1/3/131380847/9910934.pdf
    • http://files.housingamericacampaign.org/uploads/1/3/1/4/131437878/jareru.pdf
    • http://files.congregatabotanicals.com/uploads/1/3/0/8/130814208/8215823.pdf
    • http://files.homecheftraining.com/uploads/1/3/1/4/131407802/benixopeza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mizamolapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/75530790931.pdf
    • https://cdn.shopify.com/s/files/1/0439/5725/6350/files/fidogegikilabiro.pdf
    • https://cdn.shopify.com/s/files/1/0438/4037/2901/files/73505612969.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/33484294339.pdf
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/53534216447.pdf
    • https://cdn.shopify.com/s/files/1/0436/9452/2518/files/bewokazizolom.pdf
    • https://cdn.shopify.com/s/files/1/0430/0141/3785/files/34763680.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/mabimar.pdf
    • https://cdn.shopify.com/s/files/1/0432/6575/3241/files/88900208970.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_off00006bca.bin
172ac47d3103a7ed78047c8d1acaef54ccc456dfcfd79b1247933efd5e664473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCA 5328 bytes
font_01_sfnt_off00007df1.bin
329d7439385a77ceee56ba488ea558f526748d1d6995b06e0267a24d953ccb8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF1 10100 bytes

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