Malicious PDF — malware analysis report

Static analysis result for SHA-256 413b5a993686068b…

MALICIOUS

PDF

69.5 KB Created: 2020-12-22 08:17:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 63127b3db4c34c84d5b086eb5b5ad966 SHA-1: 719f58be0104aa3d47ddc858535647ebcdd7a62f SHA-256: 413b5a993686068be7d65b2367b070769786f1f0f5d92196b3bb79948a28b3df
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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=best+exercise+to+drop+inches+fast In PDF document text
    • https://static.s123-cdn-static.com/uploads/4455180/normal_5fccd4244e02f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416301/normal_5f9f1896ca75e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411682/normal_5fe15c94a36ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416672/normal_5f9f248454aa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387406/normal_5fd3bf2680fc7.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/93301c76-9949-434e-a87d-cdb821424471/3568898920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37960c01-f1c2-4195-a089-b0f4abbb54bd/63516081119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f40963-86cf-4f63-a662-4747ea90865b/48693673268.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce4b1f996d611d5f63d558/t/5fd67f48164d0f203c802256/1607892809027/b._sc_ka_full_form_kya_hoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e5cca6b-126d-4094-a18f-23989d9306f5/38385293991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9e49a2f-64a5-4390-85c1-15286af714b4/71451485485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10f52301-7805-4a02-be90-0857cbafea15/21871394887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f888cd-0861-43cc-a479-b1aad378cba9/80301269709.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_off0000d242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD242 5328 bytes
SHA-256: 753f5f68905eca64aeb5dedc3f57786ef48cfd605f58636c1f0a652651b42348
font_01_sfnt_off0000e469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE469 11012 bytes
SHA-256: a250f14a36fa17624db1d9a2038af01918332c83948323d17e002c1dc9aecab7

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