Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1044697db29fcc…

MALICIOUS

PDF

53.3 KB Created: 2020-08-28 13:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c975abcf263c93e8a1348ae59075a1c SHA-1: 0714ee86e75a3a5d392de601632f55e821c47f5a SHA-256: 9a1044697db29fcc87db903737ae8b0a288a0b13bb31ea853c1aac36f99771ac
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, pointing to 'https://ttraff.ru/pify?keyword=the+next+american+revolution+grace+l'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility.

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=the+next+american+revolution+grace+l
    • http://files.morningrosehouston.com/uploads/1/3/0/9/130969169/75961a.pdf
    • http://dewepa.stoughtonfinearts.org/uploads/1/3/0/7/130740597/4190926.pdf
    • http://files.olrc.us/uploads/1/3/1/4/131452903/1701315817a61.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/sunopevepimovinuwilirav.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/fapojubomisosoru.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/zirejaronina.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/zodejovusojisudilive.pdf
    • https://cdn.shopify.com/s/files/1/0434/5770/8193/files/tozaduduz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/tires_reviews_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0436/1846/7997/files/41297840611.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/zumufezijevefa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/blockchain_for_dummies_free.pdf
    • https://cdn.shopify.com/s/files/1/0459/9323/0498/files/38816414924.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_off00009314.bin
5c6037f5421889fda76b2225637f2c68fd74424aba1e9887b24bd01d5cfb397e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9314 5112 bytes
font_01_sfnt_off0000a44e.bin
f5c37dcf25447e6a996750a72b54bb77abb0ec2831875e72585e1977c545b91e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA44E 10420 bytes

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