Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9039074bb21fd2f…

MALICIOUS

PDF

48.8 KB Created: 2020-08-11 13:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a395274f86a2cddf00efa31033f34e3 SHA-1: e84fa24d5aa00ef6f55cd73214c52f114f3bfa25 SHA-256: f9039074bb21fd2f9137696af5767ceceb110b5cf53655ffcdf9fa52f5eb5250
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is embedded within the document body, disguised as a link to a PDF about leadership theories. The PDF also contains a link farm heuristic, indicating a large number of external links, many of which are hosted on Shopify. The primary malicious URL is 'https://ttraff.ru/pify?keyword=trait+and+behavioral+theories+of+leadership+pdf', which is likely used to redirect the user to a further malicious destination.

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=trait+and+behavioral+theories+of+leadership+pdf
    • http://files.rachelmoretti.com/uploads/1/3/1/8/131872178/7a8ccaa4b.pdf
    • http://zijak.theworldofmcewan.com/uploads/1/3/0/8/130874254/1765928.pdf
    • http://files.ekilmp.com/uploads/1/3/1/0/131070754/bakep.pdf
    • http://fuxafewi.littleblessingsofaloha.com/uploads/1/3/1/1/131164250/xamusuniwozisanef.pdf
    • https://cdn.shopify.com/s/files/1/0437/2204/7638/files/kofemolejekowizonoroganix.pdf
    • https://cdn.shopify.com/s/files/1/0428/2892/3046/files/21407021539.pdf
    • https://cdn.shopify.com/s/files/1/0430/5063/1319/files/cultura_do_abacateiro.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/wugewulokused.pdf
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/how_to_develop_confidence_in_public_speaking.pdf
    • https://cdn.shopify.com/s/files/1/0434/5361/2199/files/87605298852.pdf
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/dufemapejujowap.pdf
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/ludan.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/jarezabimikubipepovenuta.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/roman_candide_en_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/26166664600.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_off00008163.bin
ccef2487d4a1281b259f3554f1f7811103d679ce3b87b9c23c28c3490796ba61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8163 5280 bytes
font_01_sfnt_off0000934b.bin
030e4ded6b5387bab9d12a1f5ffaa44bad4405540fdc6f245660d86cab81383a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x934B 10072 bytes

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