Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ff3fd7eb9d91ba…

MALICIOUS

PDF

63.4 KB Created: 2020-11-19 22:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 15bf1c384a7a169b977effcd50eeb586 SHA-1: d16d2af43bcdd93b94309abc243c14e46a6ce489 SHA-256: c3ff3fd7eb9d91ba8bd6c1daa122753f6c143f45ef482dcedaf6da0e70faf466
154 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://gettraff.ru/strik?utm_term=dust+in+the+wind+guitarra In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_5f8ee2dd2fd3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406463/normal_5f9cf31321928.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383561/normal_5faaffac6c590.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376629/normal_5fa83bd127a14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369917/normal_5f95d87f5c159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417123/normal_5fa8664c67bda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5f8f64139543f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385213/normal_5f9050d2830d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420588/normal_5f9d4ab20dec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382974/normal_5f8e32a682ee8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379241/normal_5fb4f4a601558.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/lewuli/lados.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/how_to_add_footer_to_excel_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/34124385488.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/63263501078.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_off0000ba20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA20 5144 bytes
SHA-256: d2e8c6adaeb3073b6d26e90ee1b7c1679d629553eaee3885ab197c7c247939ad
font_01_sfnt_off0000cbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB1 10780 bytes
SHA-256: 58e37330545ea119b396826b18c10fb4800fa4d40138db940ab6b4e1e2d7bddc

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