Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fbc862ac2753abc…

MALICIOUS

PDF

59.0 KB Created: 2020-08-09 15:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e32aa9795dcbbe6b4305bb1f7f28a5 SHA-1: c7a36a3ec523c50e2355f1fff29efa9c7355ff5a SHA-256: 7fbc862ac2753abcacbd23cd138bef7d0059229356c0d3f5852c92acd4df44b4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=lspdfr+callouts+installieren'. This URL is embedded within the document body, suggesting a social engineering lure to trick the user into visiting a malicious site. The presence of a link farm heuristic further indicates a pattern of distributing malicious content through numerous PDF files.

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.ru/pify?keyword=lspdfr+callouts+installieren
    • http://files.gabriela.is/uploads/1/3/2/6/132681698/fuwexubekoli.pdf
    • http://files.arcubusensemble.com/uploads/1/3/1/4/131453990/wekeka_siwixuna_wanitizu.pdf
    • http://files.henestrosastudio.com/uploads/1/3/1/4/131438538/pukupale.pdf
    • http://reluvuz.artpourparties.com/uploads/1/3/1/4/131437044/jobunupenabojatew.pdf
    • https://cdn.shopify.com/s/files/1/0449/9714/8836/files/critical_theory_reader.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/22782858979.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/perovotadibirasakamif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5548/files/britax_marathon_clicktight_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/gozisi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/tetiminuxokigoxorimasebit.pdf
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/nirisufisilexekawe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/46615458100.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/fawedikexofakezipomujefu.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_off0000a90f.bin
bf31d5cc8f4a193fa7fa70735f258bf3bc215106b8352eda4efe8ac88e05bb28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA90F 5092 bytes
font_01_sfnt_off0000ba76.bin
678eaa0567245eb89e336afa47a6eb6ce48c440837673629f3e7c4ee59ae061a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA76 10820 bytes

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