Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae18b54c11094597…

MALICIOUS

PDF

42.7 KB Created: 2020-08-28 07:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffa578c18bc6f6fff53f96e9a0f01ec6 SHA-1: 5f626eda24dcbce7b7581647b3d337bc47acdd5b SHA-256: ae18b54c110945978a43801e53a58240b0de7fc781c00a645ec53bf2450e72b3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=ejemplos+de+derivados+halogenados', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to 'Ejemplos de derivados halogenados' and mentions wkhtmltopdf, suggesting it might be a lure document. The primary attack pattern involves redirecting users to potentially malicious content through a network of 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=ejemplos+de+derivados+halogenados
    • http://files.vizualpost.net/uploads/1/3/1/4/131453060/litukalurodamo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/puduposepofaju.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/xutolumokunuluropogena.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/baxupetunodubisivomexaku.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/23463364739.pdf
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/achtung_cthulhu_fr.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99744184538.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/fizaberizo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5126/0823/files/zufutesizofilowonojiwex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5589/files/mojadazeboruxizodefuso.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_off000064f7.bin
b3234b79025bf986e009145ca84b2b7a51907bdf4a9647defc16cf31399b2bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F7 5464 bytes
font_01_sfnt_off0000777e.bin
bcfe0462462fe0aec353bcfa607b1a19a23cf42bdbbd72b235646ea26a5dc949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777E 11320 bytes

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