Malicious PDF — malware analysis report

Static analysis result for SHA-256 5045054ff497ad86…

MALICIOUS

PDF

41.4 KB Created: 2020-08-26 08:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61532a2b050b697eb54a9ca8bbfe0182 SHA-1: d1c900179bf98cb75547a83f3afa2c79dbe2dacf SHA-256: 5045054ff497ad86d767ac8591d4332efe0e373e2b7a3678d05eadeea4a821d4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=je+vous+pris+d%2527agr%25C3%25A9er+mes+plus+sinc%25C3%25A8res+salutations'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs hosted on platforms like Shopify. The document body contains garbled text but includes the same malicious redirector URL. The primary intent appears to be luring the user to the malicious redirector.

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.link/pify?keyword=je+vous+pris+d%2527agr%25C3%25A9er+mes+plus+sinc%25C3%25A8res+salutations
    • http://files.osheastuff.com/uploads/1/3/1/0/131071157/3739330.pdf
    • http://febemem.capstonelegacyscholarshipfund.com/uploads/1/3/2/8/132814930/sesisoviragaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/fajofukiwewifutofibaw.pdf
    • https://cdn.shopify.com/s/files/1/0459/8648/0295/files/bandos_solo_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/derixiw.pdf
    • https://cdn.shopify.com/s/files/1/0457/6624/6564/files/tanoxegilo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/nipereb.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/7897273108.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/zefevo.pdf
    • https://cdn.shopify.com/s/files/1/0452/1938/1399/files/70888239967.pdf
    • https://cdn.shopify.com/s/files/1/0433/8542/1978/files/administracion_financiera_internacional.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/44718478395.pdf
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/46887393517.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_off00005d8f.bin
167428fcced8604c1294c43f86a3998cf01330b5cbe14dab86efc815a5b2de4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8F 5760 bytes
font_01_sfnt_off0000708a.bin
93e29861d92ed9a5f90fceab3dd0ccc19f7a2959799f108101c5ee26feea5774		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 11976 bytes

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