Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1cb96186f6dbbea…

MALICIOUS

PDF

72.6 KB Created: 2020-09-01 09:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03f5ceff69c7659785d5ee562689971f SHA-1: 755c5d52b243dcaa6bcace9bdd1681b7e5115b92 SHA-256: e1cb96186f6dbbea2546a1eb91b97580f7543d64576f14e6c7d284f5cf227752
150 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/wix?keyword=radiohead+the+bends+full+album'. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the intended destination. The presence of a link farm and a malicious redirector indicates a phishing or malware distribution 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=radiohead+the+bends+full+album
    • https://cdn.shopify.com/s/files/1/0434/9578/4600/files/kasuzuxizonu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/96304270864.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/39262630553.pdf
    • https://cdn.shopify.com/s/files/1/0465/1401/2318/files/adsense_approval_blogger_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/65709623156.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/bagani.pdf
    • https://cdn.shopify.com/s/files/1/0432/9727/6064/files/cabal_online_leveling_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/jutinipo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/all_marketing_concepts.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/jadugofiwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/16106294258.pdf
    • https://cdn.shopify.com/s/files/1/0453/5641/7179/files/42651979308.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ee411929aed468eaa0a2edda25113f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc2ca64bcc87477fb5d65930b045d250.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2f3.bin
9c9d4573fb5b93deab1e2e577c0dbd5a0031e164072c16e69331531ccbfa93db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F3 5080 bytes
font_01_sfnt_off0000d40d.bin
c17e3dcfe0ab9c62cd7b1c808486a07aec107f5aaed5290f77c66e3b597491df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD40D 16052 bytes
font_02_sfnt_off00010576.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10576 4324 bytes

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