Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e2fd1de3ca1d6e…

MALICIOUS

PDF

74.6 KB Created: 2021-02-15 07:12:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b99e3c3953951159468fa12b2f41f15b SHA-1: 21d55728218a593037c2802ab8cc0f1ad34c865f SHA-256: 18e2fd1de3ca1d6e5cdd1459f7026499b81d3822fe2abc8b88556f721e670019
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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/123?utm_term=when+planning+for+college+you+should+consider+brainly In PDF document text
    • https://static.s123-cdn-static.com/uploads/4421468/normal_5fc69f87da6b1.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/7jfCJZr/nokisaxofebaletevovasanoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406223/normal_5fd62ae3a2cbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470985/normal_60239de907812.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388620/normal_60149f6d0a4f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jitelujojutomu.rf.gd/mebiwujogomenikedoditoror.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/vendor_cancellation_letter_template.pdfIn PDF document text
    • http://sofidusujewa.epizy.com/world_economic_forum_report_is_published_by.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/kowul.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/jezorikuseratekulav.pdfIn PDF document text
    • http://najefitisefema.epizy.com/xorine.pdfIn PDF document text
    • http://wuxininozikup.rf.gd/free_powerpoint_templates_for_teachers_presentation.pdfIn PDF document text
    • http://rubujizuz.epizy.com/kibagobafadawi.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/62575833584.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/boom_beach_mod_apk_house.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/flybe_compensation_letter_template.pdfIn PDF document text
    • http://xuresiru.epizy.com/inference_worksheets_high_school_free.pdfIn PDF document text
    • http://gadoxijumulop.epizy.com/3d_shapes_for_powerpoint_free.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_off0000e50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50A 5672 bytes
SHA-256: 05cec8a2e56f93bac21906ffe0bb6f96e81ffa7d851c7669eeadf570ccf7c996
font_01_sfnt_off0000f86a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86A 10720 bytes
SHA-256: ab762f1fa8be41427cf5626620adb31e382e75bd454bbe6d871d7a6669996aaf

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