Malicious PDF — malware analysis report

Static analysis result for SHA-256 429202c2f3b269da…

MALICIOUS

PDF

63.3 KB Created: 2020-12-05 01:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b7f51e14874b4ece36a3634787069cb3 SHA-1: 17052eb44cb3c9041bd7af6d379ef3956eea0791 SHA-256: 429202c2f3b269daa4d71778f0f7f978f13a843e8d3d03e01b43d1f6d70ff1ea
222 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The document appears to be part of a link farm designed to direct users to potentially harmful websites, as indicated by the URL 'https://cctraff.ru/strik?utm_term=danny+devito+magnum+dong+twitter'. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest an attempt to facilitate malicious redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/strik?utm_term=danny+devito+magnum+dong+twitter In PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/fd2581700be3.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/2201b7a9c1d32f.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/817390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fc0345f1a475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421787/normal_5f991e55eee62.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d2c2805-fac7-4593-961f-ba7681e0b81b/44374068361.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4fbd1972c46e3c9561dc/1606373309833/jiwiduzeganenumuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb901e6-1e11-4eb0-85bc-138ad714c672/9967246631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e3ecee1-fdc2-4a36-930f-9469f9c5e762/25725479214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c684b67-9b5a-41d6-9966-85baed1996b4/81333279652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7ed823e-bc40-43d9-b1c0-7696f648b855/17652140221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcf3cca5-9f8e-4e84-bfbb-a8fa2a1d25fb/37345953007.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/wuvunag.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_off0000ba74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA74 5188 bytes
SHA-256: 1c32532ed8aae0e45c6a2116a9a0eb91d6b8d7ade368edc9eb45555900f470e4
font_01_sfnt_off0000cc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2A 10688 bytes
SHA-256: 846bdbd407ea542cc8b3abd315024576c30bd74952869d4d1df738769e3f4817

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