Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62123d849d0043b…

MALICIOUS

PDF

41.6 KB Created: 2020-09-05 19:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af42358b4a91392790b2209b6db41e7f SHA-1: 52cb28588a5dddec516d082d2f6cf6fca6fb39dc SHA-256: d62123d849d0043bb91dc013f93529073c0e293d2ec77905f50bf8fac6e06374
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'ttraff.club'. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF URLs. This indicates a likely attempt to direct users to malicious infrastructure, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=angular+8+bootstrap+template
    • https://static.usrfiles.com/ugd/097bd5_6975b45a3d9c4ad4bb74ecfb01e0974f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0b44587f97740989ac55e2308e7d60f.pdf
    • https://static.usrfiles.com/ugd/f9d4cd_36cd87d2bf524b0abea551dba1b066c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4820d587703c45f1bae3d88223922d31.pdf
    • https://static.usrfiles.com/ugd/54fa57_31643d37b0ae44ab8168425b1f1137fc.pdf
    • https://static.usrfiles.com/ugd/c450b2_82d360d3085e483b9342241555cbe887.pdf
    • https://static.usrfiles.com/ugd/7603ae_3ec6d05290ef4c739d4c79a2826a079a.pdf
    • https://static.usrfiles.com/ugd/2ca09c_f0ae3e9d64f8445a9ae03c84bf357ae9.pdf
    • https://static.usrfiles.com/ugd/6846fe_b69f352eb0604962b7749cd969c22fd6.pdf
    • https://static.usrfiles.com/ugd/ea2f88_9fa1e8ff75f74a56ac9bba58b68ea514.pdf
    • https://static.usrfiles.com/ugd/b8c837_c802f908fff94ecfb8e5cb5236a1af91.pdf
    • https://static.usrfiles.com/ugd/a91264_16e64926aba1472da88e1ef37abd1587.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_off0000635f.bin
b9bbbe375f69feb2ed85f435db7c610a8f6c6b78aecee447d1916148b47eb296		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635F 5460 bytes
font_01_sfnt_off000075da.bin
2992f4d6fa5a720f906ef0ed2969ee00a7034a4c7764d455d8a8c4c78c75f8ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DA 10524 bytes

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