Malicious PDF — malware analysis report

Static analysis result for SHA-256 71339c000ad735ab…

MALICIOUS

PDF

40.7 KB Created: 2020-10-28 18:06:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3340cdf9d42b3e762ab6d757d327a9c7 SHA-1: 223b4c2f80b5684f88f3f216fa33a11bc7f9bc2e SHA-256: 71339c000ad735abe716578835e8614bd96d33ba4c23ec46b1c555bfd05d9704
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://cctraff.ru/pify?keyword=new+directions+aromatics+location, is directly associated with this malicious activity. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious redirector strongly suggest an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

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://cctraff.ru/pify?keyword=new+directions+aromatics+location In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_5f91f77fc7a97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5f9112546d606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f8f8c176bda6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405674/normal_5f94ddcb6f1a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370265/normal_5f8ea404dfa37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403533/normal_5f926cce97b9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_5f8c7c605f6b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371240/normal_5f8b25c35c1da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370533/normal_5f8861808dc9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f875cc0afd95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f8d6dad9fe69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f87b63e92d05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5f8ee60739499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411709/normal_5f9592ac67760.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/apgar_score_interpretation.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/basic_statistical_tools_in_research_and_data_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/gunigatidegexekuburi.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/esl_all_about_me_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/fenadupogarudex.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/ruzevemarugubina.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/40208559477.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/livro_de_receitas_ac_camargo_cancer_center.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/bezemuvunowuduziwopo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2C 5148 bytes
SHA-256: c623414f824611e371c17ab63828837c74ead58458d2a98f351fe16130eb3574
font_01_sfnt_off00006fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA9 11196 bytes
SHA-256: 2545754c2846690864631256fa03ddbba09ab6a85a419337d3fd768ab7a0f8dd

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