Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8fca86bd6f2110…

MALICIOUS

PDF

59.0 KB Created: 2020-09-06 10:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600764732fbdbc7feaedeeee463a6384 SHA-1: df3b1e3de5dd8b3b7f88a9aa31ce7b229b0bef13 SHA-256: cb8fca86bd6f211067b49b9b5e0217e28e312ac578266b3337c15243fd48be21
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Forces in 1 dimension worksheet answers' and embeds multiple links. One of these links, 'https://ttraff.me/wix?keyword=forces+in+1+dimension+worksheet+answers', is identified as a malicious redirector. The document's structure and embedded links suggest a social engineering attack aimed at directing users to malicious infrastructure.

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.me/wix?keyword=forces+in+1+dimension+worksheet+answers
    • https://static.usrfiles.com/ugd/7f614e_1522de58b27e43bd98b2c42aa3e110a6.pdf
    • https://static.usrfiles.com/ugd/4733ca_38c25594e04743849baac773eafa3122.pdf
    • https://static.usrfiles.com/ugd/739437_3c4dcb269b7c48e2aed936bfc4741932.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/classical_mechanics_taylor_solutions_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/credit_risk_management_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/gamovipefoni.pdf
    • https://static.usrfiles.com/ugd/80685d_dbe9fbf9dd1c48879f716b382479d8ed.pdf
    • https://static.usrfiles.com/ugd/9219f8_b623cd93c32041d9bfd208c0cf35e416.pdf
    • https://static.usrfiles.com/ugd/7603ae_d896091deae2421aac2081eca5e5f8ea.pdf
    • https://static.usrfiles.com/ugd/cf5aa9_133cf4bfe50e498aa1fb9cc807ad30c8.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000846b.bin
39b850c878970d7af30010f475b762b1b619925731d8d83aebda955e32957ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x846B 5312 bytes
font_01_sfnt_off00009627.bin
84052d19c6296f9680b879dc53d25b0b1b31343295fe2012eee1560f85399d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9627 6196 bytes
font_02_sfnt_off0000a535.bin
815da8475e2b5b29fe079de3b994acf36465e121d8d8102eaa9948a042869a0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA535 10760 bytes
font_03_sfnt_off0000ca00.bin
fa9cf35bd3c77218e993c0f8b1ba1f65b23c7ea6aead3ad2ac3540fdad4035c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA00 16112 bytes

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