Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9926939ad75424…

MALICIOUS

PDF

64.8 KB Created: 2020-12-04 11:08:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e0d2f4b842c540e57d9c5936577e2acc SHA-1: b050befa04134f2a35d2a4e06d6538b1a25e8c61 SHA-256: ca9926939ad75424678cd7892b7f654f7aff59872d38108771faac6c36b489b3
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirector infrastructure or potentially malicious content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong attempt to direct users to harmful sites. The ML classifier and ClamAV detection further support its malicious nature, likely as a phishing or redirection tool.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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?utm_term=how+to+tame+a+wild+tongue+response In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5f8f1b97539b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_5f908cbeafa52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380076/normal_5f992691b9a21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496225/normal_5fc3e0af62154.pdfIn PDF document text
    • https://fixumimudojuzu.weebly.com/uploads/1/3/4/6/134607797/jegifuma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408709/normal_5f96056f96af8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4c545147b14804297367/1606372436839/section_8_inspection_checklist_nyc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a60b1c8c7413143d24fc/t/5fc3b78be6d49a06bb03da47/1606662028337/destiny_of_souls_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfae773299f0c5439d735/1606220520000/ruduvija.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51f2ebe9b693951262aaa/t/5fc7056948d5672cfb34707a/1606878574164/walmart_grocery_shopping_application.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fc21f68a97599144e3f6ce4/1606557546729/wenozedaxa.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_off0000c3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3EE 5332 bytes
SHA-256: 4ca246b23b560d289bb7105fb7f9c69d4f3edcc020dfe0417f1f65df6b510871
font_01_sfnt_off0000d604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD604 9640 bytes
SHA-256: d9e483f383ed371f9a5a765ca3ea923788f2644b04a70be1b86adc96567cb52b

Open this report in the interactive analyzer, or submit your own file for analysis.