Malicious PDF — malware analysis report

Static analysis result for SHA-256 a42a17e7a4da0aa3…

MALICIOUS

PDF

43.6 KB Created: 2020-09-01 16:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85ff6cd139b095dfc8e26b6fd6236824 SHA-1: c9a3adbb5699fa0076d124b8983212e4ff20968f SHA-256: a42a17e7a4da0aa311558c20a25cf56a281211ad6426c2b71855abb52ad6f86e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=the+rat+king+quest+guide'. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to a malicious site. The presence of a link farm heuristic further supports the idea that this PDF is designed to drive traffic to external resources, likely for malicious purposes.

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.cc/pify?keyword=the+rat+king+quest+guide
    • https://static.usrfiles.com/ugd/6cf392_c35d603dedb94c85b8284e7115f8b09b.pdf
    • https://static.usrfiles.com/ugd/a18aa6_1c62a2cf16124149bab54ff231eec355.pdf
    • https://static.usrfiles.com/ugd/b8c837_f56671191947460eb84ea13a712d7700.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/lajatosaperakuwetukozi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/pdf_text_editor_freeware.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/fugezagixujilisunixezorig.pdf
    • https://cdn.shopify.com/s/files/1/0432/3963/7155/files/87583569980.pdf
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/napevinamozij.pdf
    • https://static.usrfiles.com/ugd/764aaa_596b2df96f91474ab38131057833583e.pdf
    • https://static.usrfiles.com/ugd/5926b4_47dd2eaa8ef24aada65e4cb87a10f119.pdf
    • https://static.usrfiles.com/ugd/b48b60_968ce46ab5264233969d2ed1735009a2.pdf
    • https://static.usrfiles.com/ugd/b50c55_ee21f661081447b18253ffaf99ee764d.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_off00006dd0.bin
e01bbb9912b57f7b26d6f3561132716990a661ef4c4cf17f10d42c29342e1a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD0 5196 bytes
font_01_sfnt_off00007f6a.bin
b915e9d59e409b3e7f97577627f91f97e40f118098741049c9d1363b2dd85de8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6A 10096 bytes

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