Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a4c5780eb8c58b…

MALICIOUS

PDF

43.6 KB Created: 2020-10-24 13:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2bef13b9f313ad12649504adf232fc0 SHA-1: 9234d098cac4c04af27df29061b25d66bf9ec773 SHA-256: 32a4c5780eb8c58b3b0ed257c7edd2eb2f58951f3b1fc9795f5cf1c395df0f17
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is embedded within the document's content, suggesting an attempt to direct the user to a malicious site. The ML classifier also strongly indicated maliciousness.

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ggtraff.ru/pify?keyword=verbs+irregulars+angles+pdf
    • https://sopopubepomexak.weebly.com/uploads/1/3/4/2/134265445/nevogolun.pdf
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/donulusunowun.pdf
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5f904bb253767.pdf
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5f8a2a172ffcf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0494/4884/5471/files/vukinofikafefa.pdf
    • https://cdn.shopify.com/s/files/1/0496/0855/6708/files/arris_tg1672_manual.pdf
    • https://cdn.shopify.com/s/files/1/0496/3926/0309/files/como_poner_fechas_consecutivas_en_excel_2013.pdf
    • https://s3.amazonaws.com/tetazino/doramupurofu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/autobus_algeciras_malaga.pdf
    • https://cdn.shopify.com/s/files/1/0504/4355/0910/files/36246601136.pdf
    • https://cdn.shopify.com/s/files/1/0432/5854/4292/files/what_are_we_doing.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/motoman_teach_pendant_manual.pdf
    • https://uploads.strikinglycdn.com/files/db6692ad-297f-4029-ab36-9a6cce6ded9a/monokirivaz.pdf
    • https://uploads.strikinglycdn.com/files/76cf1c82-f931-40d1-a807-f592963387f8/57352852098.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b16.bin
05f19b17c144fa8c6fe8b0c4b1b05692530cbd79628a106a73b99ede970e4217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B16 5312 bytes
font_01_sfnt_off00007d32.bin
52665e180c61eb2c27285a4ccdf8e985fc8e69db7b8a29c85dfc1bde873fa59c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D32 10916 bytes

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