Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c10aeeb1b57b54…

MALICIOUS

PDF

40.0 KB Created: 2020-08-10 20:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8264dce6c0fe2b9a0e1c31609b4cd5bc SHA-1: 494eb98d6bf1fe12f79e6081d119d1871c884223 SHA-256: 93c10aeeb1b57b54127e7e4bf7dc020e0674048c5bbb21bd824715ff06efa535
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=anti+inflammatory+diet+dr+weil+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to potentially harmful content or to manipulate search engine results.

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=anti+inflammatory+diet+dr+weil+pdf
    • http://files.believethebestisyettocome.com/uploads/1/3/1/3/131378990/3534553.pdf
    • http://files.whatthefoodfilm.com/uploads/1/3/2/8/132815866/3731003.pdf
    • http://wilebabe.arcbeatlepress.com/uploads/1/3/1/1/131164250/sizumajiw-wijamunakosu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/fadds_party_buses.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/zavufolu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5934/6599/files/expos_sur_le_civisme.pdf
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/dopumuxejawoximisuwuxejik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/base64_encoded_file_php.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/basezewatepadigegodud.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/81568733490.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9637/files/jelilokamigopokeneja.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/dofujiwaxila.pdf
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/c_tony_gaddis.pdf
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/xijevetono.pdf
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/nulemajipasuxinebiwinit.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_off00005f7f.bin
4313864edb62ca9c115591d4012d3a949426c75a2d094a602a8ea1dfb7ea6385		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7F 5192 bytes
font_01_sfnt_off00007122.bin
d1c10ff7d90e4e9ad3f80ec8c95ed6df776bee55b5f1cc99a73b7e13235c69b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7122 9956 bytes

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