Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf7941b7a6d2802…

MALICIOUS

PDF

44.2 KB Created: 2020-08-29 12:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4f568323a7d1153329928d1ead2048e SHA-1: c37db974e0c156bbefeb03d3ac27b6435d8d1248 SHA-256: cbf7941b7a6d2802367d9323c0a9df66c090397b607939eb11cd446207421b20
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'free project cost tracking template excel' and embeds a link to a known malicious redirector at ttraff.ru. This redirector is likely used to obscure the final malicious destination. The document also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm techniques used to improve search engine ranking for malicious content.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=free+project+cost+tracking+template+excel
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/mimizi.pdf
    • https://cdn.shopify.com/s/files/1/0463/0596/8285/files/simevefivowatumogafakuwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/1004/files/southpaw_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/buyer_s_guide_insurance.pdf
    • https://cdn.shopify.com/s/files/1/0438/7799/0568/files/lolaf.pdf
    • https://cdn.shopify.com/s/files/1/0465/1882/9206/files/jilonugejap.pdf
    • https://cdn.shopify.com/s/files/1/0432/0310/0832/files/programa_para_unir_en_uno_solo_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0435/6594/0904/files/zupovivufoxifodebawuromi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/business_english_advanced.pdf
    • https://cdn.shopify.com/s/files/1/0463/0645/9810/files/32422901382.pdf
    • https://cdn.shopify.com/s/files/1/0433/7690/2309/files/85972823370.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1275/files/futur_proche_endings.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f40be5bc94947249c1abfbd6357f31e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7cb8f81fe3a248409e0e21d2f015d495.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_off00006e3c.bin
d102346a78bba4cafbe46ec86e32a878642f1cc4c79d3beeb2eceeebff388836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3C 5416 bytes
font_01_sfnt_off000080a3.bin
210658a64dc5119c9dc517ed60373aa7680e3c0bf4a1ded5168d6954751101e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A3 10332 bytes

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