Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b18ac05be94976…

MALICIOUS

PDF

51.2 KB Created: 2020-08-07 03:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 765bcccecb7928d67f8623f81047aab1 SHA-1: 76290ed24867a7453f6fe89e22f9c489ae3d4b06 SHA-256: a8b18ac05be9497620aa1a65251817addf79b017a63faf2b7376ded2418e7e8a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, many hosted on Shopify, suggesting a link farm designed to manipulate search results or distribute malicious content. The document body contains a link to 'ttraff.com', a known malicious redirector, and the PDF structure reveals multiple embedded links to various domains, including Shopify-hosted PDFs.

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=certificacion+leed+requisitos+pdf
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdf
    • http://files.danvillerespiratorycenter.com/uploads/1/3/0/7/130739284/rubedalusolisure.pdf
    • http://files.678vintagecameras.ca/uploads/1/3/1/6/131637811/gapizolun.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0408/files/20524175511.pdf
    • https://cdn.shopify.com/s/files/1/0433/5540/6494/files/jexurele.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8901/files/67892167469.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jojanasesejunuveko.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/dixexozowedekadujoge.pdf
    • https://cdn.shopify.com/s/files/1/0435/0522/1784/files/82377317590.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/jasuxuwudatezutadiguw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/wonopipitilunusoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/74136651028.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_off00008a37.bin
1fc11feb5fcebfe98e61cb327408adcbbc27d24a2cc6903249c11cf0211bad45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A37 5180 bytes
font_01_sfnt_off00009be1.bin
ef59cbf1e3069dc14ccfc18941a92f9c138dab56d8f5a5333d787eca25aa9a1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE1 10688 bytes

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