Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a432fec8653df7e…

MALICIOUS

PDF

51.6 KB Created: 2020-08-31 07:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7413ea730ccd4f6064eb3dae76f100df SHA-1: d868e8abcf459af1cc8568f853af5774e83df2e1 SHA-256: 3a432fec8653df7e671f413783c5116eec74a41180846c179062f6427098dfad
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its structure, which includes a large number of embedded external links. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.club/wix?keyword=aztecs+civ+6'. Another heuristic identified a 'PDF SEO Link Farm', suggesting the document is designed to host numerous links, likely for SEO manipulation or to distribute traffic to malicious sites. The presence of these numerous links, including the identified malicious redirector, strongly suggests an attack pattern focused on luring users to external malicious content.

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.club/wix?keyword=aztecs+civ+6
    • https://static.usrfiles.com/ugd/99965f_a1766e1699194c78a40e6738677b87c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dd735709d854609871dd0341f59683b.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_652a87d3df1947eda94801e2e6e52125.pdf
    • https://static.usrfiles.com/ugd/93971e_2d690df5d1214235b43c6f804cace92f.pdf
    • https://static.usrfiles.com/ugd/f8de3e_7c616b806c5a4c92904ba552b353f4e3.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/rajolok.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6376/files/megetilamiwunumuvunido.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/capitulaciones_de_granada.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/defap.pdf
    • https://static.usrfiles.com/ugd/e4a001_7df421cefbf5496e9751b7c1f2c808c4.pdf
    • https://static.usrfiles.com/ugd/ab922d_20aa718d1c1b442eb38042cddbbe518f.pdf
    • https://static.usrfiles.com/ugd/b8c837_1467a39025ce4bce8b4f3f68e8e28027.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_off00008442.bin
66432427bdca20db92192e84cbc2d8b1aa28a37e30505eb4161e8093da0f33c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8442 4708 bytes
font_01_sfnt_off00009468.bin
eae50079583791afe4a037468d2f92649972406a53fbf5442fe0eba0f7b7abab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9468 14516 bytes

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