Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64ca1bc58ec5fa1…

MALICIOUS

PDF

71.5 KB Created: 2021-02-16 09:09:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 89be63ef4bc496075157b2d071c0a729 SHA-1: 868754b6ec29ec1cf57b460105acaaa9412b18cb SHA-256: e64ca1bc58ec5fa1c2e766e4fd08e7d43a65b80bfbc82da26aa0e7f8b304c923
184 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wb?keyword=network%20security%20engineer%20resume%20india In PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/839478.pdfIn PDF document text
    • https://fowemofuf.weebly.com/uploads/1/3/1/3/131379389/kinurakurozomo-ripagik-zuxidaxo-fupaxobar.pdfIn PDF document text
    • http://gbo.guru/night_owl_default_passwordofp0t.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/iajgEhh/rusazolam.pdfIn PDF document text
    • https://wesaxewotivaf.weebly.com/uploads/1/3/4/5/134578523/9f53f152dde6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486363/normal_6029c6f1e4c48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468274/normal_60293c905df37.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/dk5iglK/infinity_war_cast_thanos_team.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418368/normal_5fcda63a54c51.pdfIn PDF document text
    • http://vquest.website/crime_angel_superhero_mod_apk_android_1_commsppd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_6016001a70f50.pdfIn PDF document text
    • http://operationhomeplate.com/rupapeduxikixaluk3ko48.pdfIn PDF document text
    • http://umdtheatre.ru/comedy_central_south_park_full_episodesmtjy8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://surobufalinaxis.epizy.com/b._ed_admission_form_2018_du.pdfIn PDF document text
    • http://xapemekofutomun.rf.gd/doxakosefevezot.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_off0000db27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB27 5456 bytes
SHA-256: 3ddffcde0d426830652b8daae4cdfeebf9abeae0ee5e3be7557d212fd8856374
font_01_sfnt_off0000edbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBF 10456 bytes
SHA-256: aa596867d01cb59dfec28ee96763aa1743a94f9ab0603f2b19bc6672ab93f1a4