Malicious PDF — malware analysis report

Static analysis result for SHA-256 99356c247a88a925…

MALICIOUS

PDF

47.8 KB Created: 2020-08-20 06:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 430237cb75a70f7bb4e3cad93078921c SHA-1: c3ef597e489f69bd76aeef4a5f934663ab43653c SHA-256: 99356c247a88a9255b88fbc4633a356db8113b00f307f6ae42d66fb93ec1d290
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Link T1204.001 User Execution: Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=google+chrome+for+macbook+pro+2018'. This URL is presented in a way that mimics a search result, aiming to trick the user into clicking it. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute the malicious redirector. The primary malicious IOC is the ttraff.ru URL.

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=google+chrome+for+macbook+pro+2018
    • http://firudi.atvdeserthome.com/uploads/1/3/1/8/131871699/buwubovenipima_bumanowet.pdf
    • http://begido.celerahhewes.com/uploads/1/3/1/4/131407068/4113824.pdf
    • http://xiwapena.marimbaaustralia.com/uploads/1/3/1/4/131408353/padof_jigevux.pdf
    • http://files.playtennisbuddies.com/uploads/1/3/0/8/130813705/notodazefulevera.pdf
    • http://nixuj.pamelabywong.com/uploads/1/3/0/7/130775034/2254129.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4434/files/antenna_theory_analysis_and_design_balanis_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3225/4376/files/giwopidizo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/xawubij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/88121251071.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/5111977138.pdf
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/zejidakawapajatafes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d58.bin
b6c4d8b4c663c4fee4e3e6519a109e03627adad37c4a1bb1c4b26ac3617ad2b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D58 5560 bytes
font_01_sfnt_off00008040.bin
06975104011fc07fb89aba4e4015b3502dfbccd97702a1208f93126c3fd8d458		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8040 10364 bytes
font_02_sfnt_off0000a3b9.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B9 4324 bytes

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