Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a9b0d9b4f39754…

MALICIOUS

PDF

40.1 KB Created: 2020-08-09 02:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4478c6b8e283569a8a257e4cd8f32c39 SHA-1: 789a9c3fc59a73d00bc7847406bb18244355dd0e SHA-256: e1a9b0d9b4f39754fa7e1d26f0a0815be2c7b998fcc308db4ede23c71f7642ca
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically to 'https://ttraff.com/pify?keyword=advanced+bushcraft+101+pdf'. This indicates a social engineering attempt to lure victims to a potentially harmful site. The document body, though heavily obfuscated, contains references to the target URL and other Shopify-hosted PDFs, suggesting a content-scraping or link-farming technique to improve search engine visibility for malicious links.

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.com/pify?keyword=advanced+bushcraft+101+pdf
    • http://files.chubli.net/uploads/1/3/0/7/130776031/3044415.pdf
    • http://files.sdstarresources.org/uploads/1/3/0/7/130739404/1da4a282f7f.pdf
    • http://files.premierprescotthomes.com/uploads/1/3/0/7/130739987/8964067.pdf
    • http://files.worldofgoodtravel.com/uploads/1/3/1/8/131856852/guzesapujeb.pdf
    • http://files.myfriendcourt.com/uploads/1/3/1/4/131408572/a50fb7a0765ff1.pdf
    • https://cdn.shopify.com/s/files/1/0429/7405/2503/files/76999335606.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/13973774287.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/jototunarivulimidituwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1125/files/misuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ximulomonarosaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/17549744771.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/wunefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/41536119329.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/64854173394.pdf
    • https://cdn.shopify.com/s/files/1/0436/9137/6794/files/30380521645.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/30300844102.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_off00005ac3.bin
2a3790c36fda370ac4baf52c7c14dc7181be9f96d1bf009914e1c14f6dc16426		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC3 5596 bytes
font_01_sfnt_off00006dca.bin
036e8b6639d8ee98e9b315f065402bd2f114772e8db799b79232df73d23e0e26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCA 10656 bytes

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