Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f52973a2ab7bcc…

MALICIOUS

PDF

35.2 KB Created: 2020-10-27 03:02:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 0cf35ff852ae4ac0cfc01da4272e121c SHA-1: 05aa24254c63011c99b2f8ba4d835d1cc61126db SHA-256: 34f52973a2ab7bccfd9a7e869af2ec095b1b662170b80a0fd1eb799ac9271e8a
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, forming a link farm, with a critical heuristic identifying a redirector to known malicious infrastructure. The primary URL, 'https://ggtraff.ru/strik?keyword=after+movie+google+docs', suggests a lure related to movie streaming or document access. While no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=after+movie+google+docs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f8e2d11ce399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5f9137ddb0270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f8e3b42aabed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f87cd6d7f4e4.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/44a5ee.pdfIn PDF document text
    • https://vonolorijamitef.weebly.com/uploads/1/3/4/4/134452045/e92a327b.pdfIn PDF document text
    • https://zajefepitav.weebly.com/uploads/1/3/4/2/134266194/6927148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f929f5546e5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370264/normal_5f8838ee748fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8719bd1d00b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404497/normal_5f9254e4a80b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393776/normal_5f918c7c25db0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f95afe773065.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5f8bff55b8eef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f963532ec848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5f97581e7a7c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f892a2ea1f1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416789/normal_5f95f2ee54c92.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/vuraradaso/power_amplifier_class_h.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/eight_days_a_week_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/zero_belly_fat_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/logica_aristteles.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_off00004d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D91 5180 bytes
SHA-256: 34fab7671f879f41e3144331d052bfa595b89b6465e73af9747303034de5ab02
font_01_sfnt_off00005f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F29 9520 bytes
SHA-256: 30f9b41594ae820b857b887f88d6b710a3d982ec3f3124510c53e38246a6b9e2

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