Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e2737db15aee57…

MALICIOUS

PDF

79.0 KB Created: 2021-02-06 01:23:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2027a7e8cfe08df8c9cd0e7be488267d SHA-1: bc18a7849935b272abdf41f9d2c12900b71a3061 SHA-256: c3e2737db15aee57f16c062184694a4df1d28b479977d9c52892096e77d19dd1
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://yafferge.ru/wb?keyword=calgon%20carbon%20msds%20sheets In PDF document text
    • http://italdom.fun/molagifakobabz69ae.pdfIn PDF document text
    • http://otshelnik.net/4023553518ldzl8.pdfIn PDF document text
    • http://kernig.store/96694908128x1raq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368237/normal_5fc67ebbc711b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470035/normal_601474dfb78dd.pdfIn PDF document text
    • https://cdn.sqhk.co/gagobuniponi/aGiggj5/tapalemigazazuviz.pdfIn PDF document text
    • http://repochka.site/antonyms_worksheets_for_grade_534glw.pdfIn PDF document text
    • http://senenetikoxikom.22web.org/ligunisebanofizofibod.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafaveju/icLvVzK/jidukibebu.pdfIn PDF document text
    • http://fimewot.xyz/internship_report_marketing_strategy5u2g0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368497/normal_5febbfd6e154d.pdfIn PDF document text
    • https://cdn.sqhk.co/sejujona/hbKBE1C/iphone_ringtone_trap_2020_remix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zividovapajawuv.epizy.com/mausam_ki_baarish_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/incident_report_form_template_childcare.pdfIn PDF document text
    • http://kikexufan.epizy.com/xedugofugawub.pdfIn PDF document text
    • http://wekivegu.rf.gd/exercises_for_carpal_tunnel_syndrome_relief.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/7177852294.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/bipolar_disorder_patient_case_study.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_off0000f63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63B 5396 bytes
SHA-256: 15a2d27224fa312c92f53a8d482c78e778250a9d2649cf1364eb29560e30275a
font_01_sfnt_off0001085d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085D 12564 bytes
SHA-256: 0c8b71a744fcad6eb9048ee2194a932cd9eff1d3ab77dea7feaff06c3b4fc5df