Malicious PDF — malware analysis report

Static analysis result for SHA-256 267ed6e6b20598e5…

MALICIOUS

PDF

39.8 KB Created: 2020-08-31 12:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a259117872c3cd55f80475191b1542ab SHA-1: ac93097ac60e034feff148c5322924c7bcb6521a SHA-256: 267ed6e6b20598e52011bf1a753c8564adafadb1846110895a3d50fb3c9330a5
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=ncr+non+conformance+report+template'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous external links, including one to 'https://static.usrfiles.com/ugd/b8c837_2d77f2b57c8a43fd8b1c7c0d218342df.pdf'. The presence of a visual download button lure further supports the malicious intent. The document body, though heavily obfuscated, contains the malicious URL and other PDF links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=ncr+non+conformance+report+template
    • https://static.usrfiles.com/ugd/b8c837_2d77f2b57c8a43fd8b1c7c0d218342df.pdf
    • https://static.usrfiles.com/ugd/6c032c_71b3b6ba257b4504a9c13c6054597824.pdf
    • https://static.usrfiles.com/ugd/d01287_3ec31b303cea49baa046f8454fc18871.pdf
    • https://static.usrfiles.com/ugd/739437_76aa46723f6f4722a4c0057674f2a50c.pdf
    • https://static.usrfiles.com/ugd/b8c837_eedcbe1b79fb4250bed3d31a71959b16.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/99825991015.pdf
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/new_holland_parts_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/benim_hocam_kpss_matematik_konu_anlatm.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/10434602152.pdf
    • https://cdn.shopify.com/s/files/1/0438/4171/6389/files/government_free_credit_report.pdf
    • https://cdn.shopify.com/s/files/1/0447/5689/3847/files/heartbreak_hotel_michael_jackson.pdf
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/8925966329.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_off00005efe.bin
f0dc431191345577d86aac819eb2f4b1a4ae274bad6af52e951deb167bd11504		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFE 4952 bytes
font_01_sfnt_off00006fc7.bin
375f1bb15f6ac0b37baa9c7326d3e0cb84ea02c4b9bb8292cb6a4b0f0668570c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC7 10172 bytes

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