Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc04b1cc452c3e67…

MALICIOUS

PDF

36.4 KB Created: 2020-08-29 02:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1874366b0d2840fdeb6ce4c55a00bd1 SHA-1: f1ba5bfc32b08e49a709a6704c11a3f79abc0093 SHA-256: dc04b1cc452c3e67e0a9268d65562ede06dd2aca9536f87d590fd014e4db7b82
150 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 'https://ttraff.ru/wix?keyword=jewel+quest+mysteries%253A+curse+of+the'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to Shopify-hosted PDFs. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and the malicious URL, suggesting a lure for a scam or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=jewel+quest+mysteries%253A+curse+of+the
    • https://cdn.shopify.com/s/files/1/0440/0077/2246/files/54707881813.pdf
    • https://cdn.shopify.com/s/files/1/0440/7014/2117/files/81851725518.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/logiciel_traduction_anglais_franais_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/wipanazokakivag.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/kit_dls_2019_barcelona_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/fulapaziwinobavibil.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/13415422433.pdf
    • https://cdn.shopify.com/s/files/1/0430/3382/1347/files/71445839105.pdf
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/xuwazesod.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/capnodium_citri.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/bhagavatam_slokas_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/tobumakajerejusisupano.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7414/files/dufif.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/jomokux.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_off0000514e.bin
f82c6f1c959e46c61bc0ef20eb4b04dd5980fddaea049fe548f7325edac951ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x514E 5268 bytes
font_01_sfnt_off0000632f.bin
2e1fae900d7c8a988258a143a15834de2898551e19d409e773a66ea7c790705a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 9912 bytes

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