Malicious PDF — malware analysis report

Static analysis result for SHA-256 e447eaaeee480478…

MALICIOUS

PDF

36.4 KB Created: 2020-08-31 09:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa99aff90ce6a38685b251320f07a815 SHA-1: 101f1d584846a58588c527c5aa9baa94d465ecce SHA-256: e447eaaeee480478d86ace399bd1067ac41248e9381c95ff0e7bc6e1092d6fed
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is likely part of a phishing or malware distribution chain. The document body, though heavily obfuscated, also contains this URL. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt, further indicating malicious intent.

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.cc/wix?keyword=the+filmmaker%2527s+handbook+epub
    • https://static.usrfiles.com/ugd/33a2e4_d909e54dfa6645ea9aeaadab7cf93f5e.pdf
    • https://static.usrfiles.com/ugd/b8c837_592744d225244478a94965510ff659f8.pdf
    • https://static.usrfiles.com/ugd/590778_fb48e5ec40234184b6f66332f236350f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f0bf7f317ba4715b95a6a4860e06e8d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0465/0657/3982/files/19234890438.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/91478502691.pdf
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/annotated_bibliography_apa_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/47508888019.pdf
    • https://cdn.shopify.com/s/files/1/0430/8890/4353/files/gafexeduvusolewurunat.pdf
    • https://cdn.shopify.com/s/files/1/0440/2036/7510/files/rexak.pdf
    • https://cdn.shopify.com/s/files/1/0431/7642/7686/files/toeic_test_answer_sheet.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_off00004ea6.bin
5be7643ea1e855119fe16affa469bd55af106f870f8edd0e27bb0dded57bddc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA6 5468 bytes
font_01_sfnt_off00006116.bin
4db6ea172f5c03812fb8bb871f0a9b2b3bd890498626b5ed13f730290a07c5b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6116 10536 bytes

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