Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed96514bffc68bd9…

MALICIOUS

PDF

66.2 KB Created: 2020-12-19 22:09:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 33395ea13cf90e6360c9b8be68bb94f2 SHA-1: bcfda5fa3db13d14d0242ef859dc9137509272f6 SHA-256: ed96514bffc68bd9fc38df29260671cba1d3649aa8cfd59c9dfdd3f72e4cf072
214 Risk Score

Malware Insights

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

The PDF contains a critical link to known malicious redirector infrastructure and a large farm of external PDF links, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were extracted, the presence of malicious URLs and the PDF structure suggest an attempt to redirect users to harmful content.

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://traffmen.ru/strik?utm_term=knapford+station+trackmaster In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368224/normal_5fa75f541a236.pdfIn PDF document text
    • https://retariluwefise.weebly.com/uploads/1/3/4/8/134858211/mipapogizet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f87228326f1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5f91b12821b06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419836/normal_5fb939873a9b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402711/normal_5fc8ea81b265f.pdfIn PDF document text
    • https://fapusazi.weebly.com/uploads/1/3/4/8/134849501/b1bc94b65b28d95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389106/normal_5fafadcc2c18c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480161/normal_5fa7307823163.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/5fbe2f946457125654049aaf/1606299542462/symbolism_in_literature_practice_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/39233291123.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14d4c5bcb0228a2853727/t/5fc8f5ce56f72563b2d07b0d/1607005647550/best_online_shopping_sites_for_electronics_in_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/128985bb-bcea-4d79-9c0d-d44539df5284/form_space_and_order_4th_edition.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_off0000c77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC77D 5300 bytes
SHA-256: c57a9a782ffe114a3ba2e86ce6077fb9ad0e8996675733d2d18fc21266af455c
font_01_sfnt_off0000d975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD975 10116 bytes
SHA-256: b1dcdcf734af8f32ef5daf54354458a81853a3b16c82317feac4cda482817d2f

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