Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f0ba080e0f3e52…

MALICIOUS

PDF

47.3 KB Created: 2020-08-30 07:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98b7ce26934008b24840ee2aac75c4c9 SHA-1: 4f185ddd58c61244f7d9149744b44dd08c216fc4 SHA-256: d0f0ba080e0f3e5240c97a256406dc0c49a9f4b485f4bd343a201dd547164b8c
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, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=ilustra%25C3%25A7%25C3%25A3o+cientifica+botanica', likely leads to a malicious site. The document also contains a PDF link farm heuristic, indicating a large number of outbound links, with the first being 'https://cdn.shopify.com/s/files/1/0431/9064/8996/files/mutijodo.pdf'. The ML classifier strongly flagged this PDF as malicious.

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.cc/wix?keyword=ilustra%25C3%25A7%25C3%25A3o+cientifica+botanica
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/mutijodo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/suwetemudakuwugumazukami.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/336368851.pdf
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/55115876616.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/tower_of_ordeals_guide_bleach_brave_souls.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/18104997512.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/3452487344.pdf
    • https://cdn.shopify.com/s/files/1/0435/7128/2079/files/answer_sheet_listening_ielts.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/free_printable_alphabet_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/comprehensive_statistical_methods.pdf
    • https://cdn.shopify.com/s/files/1/0432/6896/4520/files/43468793285.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/airport_vocabulary_worksheets.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_off000066f9.bin
eb32fe7eb7385df7c0a6e4601826d7533062ae6e41c23a36e179520f73cd362b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 5336 bytes
font_01_sfnt_off00007843.bin
310d66eb80ce000dfa8318b7785199b3540bee7d7a00059abd4d6d0630bbcc78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7843 13148 bytes
font_02_sfnt_off0000a066.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA066 4324 bytes

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