Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e220e50d9e1d44…

MALICIOUS

PDF

99.3 KB Created: 2020-09-14 05:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3abe1b8cf3272a2764557adf75c678a0 SHA-1: acdf024e3a0c71378d52ae2a93d8197d1a824121 SHA-256: 42e220e50d9e1d4492fc367e13ef62188743b7aa23a23f6f62081a0f2fc2452e
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as search results for a specific PDF title. One of these links, 'https://ttraff.link/pify?keyword=der+zauberberg+deutsch+pdf', redirects to known malicious infrastructure. The document body itself is heavily obfuscated but contains the same redirect URL, suggesting the primary purpose is to drive traffic to this malicious site.

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.link/pify?keyword=der+zauberberg+deutsch+pdf
    • http://files.spokanehomeprep.com/uploads/1/3/1/3/131383953/vusorog_videfilitumag_kisanosegojo.pdf
    • http://files.buildaseries.net/uploads/1/3/0/7/130776674/7421459.pdf
    • http://files.keeversboutique.com/uploads/1/3/0/9/130969580/walibus_nivewokogo_lufovibesuwe_kurisuzinujusa.pdf
    • https://static.usrfiles.com/ugd/d5415a_852f1276a37f459f85fa715d50b97949.pdf
    • https://static.usrfiles.com/ugd/37321e_929d9fb7ecd84f04a29f65c12ea6a8e7.pdf
    • https://static.usrfiles.com/ugd/8e1900_1e9c207814924870ab304bad73c65b47.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/xumebalo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8412/7135/files/dofaju.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/43827358660.pdf
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/41436759492.pdf
    • https://static.usrfiles.com/ugd/787b0a_1cd23d03c81748fc9334d140446d65be.pdf
    • https://static.usrfiles.com/ugd/74a852_8f9722e6047541a6b4e1ac1092075813.pdf
    • https://static.usrfiles.com/ugd/808d8c_b04ab988f3da486ebdb099865e1cae27.pdf
    • https://static.usrfiles.com/ugd/8ab72e_59cdce49987c4438885d8b4a7320e06c.pdf
    • https://static.usrfiles.com/ugd/f515ca_fce90d7210824ffc8e3a32d8c8152ca1.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_off00014631.bin
500948597dd092e05f29232699f24801182441fc1dbdfcc82164538a1cf83a1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14631 5572 bytes
font_01_sfnt_off00015926.bin
525217ad8bb92381f4524b577fe58e09b58c3a16dad469c75906ecdf3a3a1ad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15926 11496 bytes

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