Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b37835bc5a58e8…

MALICIOUS

PDF

70.2 KB Created: 2021-02-25 10:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2c93f1ddb55b7aea48fb6362c309a6cc SHA-1: cb7252bf0c5585449f0a9a5ae1ffb09cb53548bf SHA-256: 75b37835bc5a58e8991e87471da067eac2bdefd02d3a9cf7e687ba057f84448c
126 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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=trifecta+oilfield+services PDF link annotation
    • http://wefinexof.iblogger.org/boilerplate_text_in_oracle_forms.pdfIn PDF document text
    • https://waruzakelejabu.weebly.com/uploads/1/3/4/6/134600446/4164236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454550/normal_5ff15c51f0754.pdfIn PDF document text
    • https://dironirodog.weebly.com/uploads/1/3/4/7/134760169/tovexunepulikedoxo.pdfIn PDF document text
    • http://makululi.iblogger.org/henry_morris_study_bible_ebook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385213/normal_601f5a6d30215.pdfIn PDF document text
    • http://dubiniba.iblogger.org/whatsapp_for_nokia_asha_200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412607/normal_6032730a0dd33.pdfIn PDF document text
    • http://megazoni.iblogger.org/sonewepi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475734/normal_5ff8d8a9a843f.pdfIn PDF document text
    • http://gewewenaso.iblogger.org/38962154940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387430/normal_6030d054438f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kasabapagikaki.rf.gd/skill_saw_blade_removal.pdfIn PDF document text
    • http://wogafufumow.epizy.com/34546348216.pdfIn PDF document text
    • http://varoniwarovez.rf.gd/36871032037.pdfIn PDF document text
    • http://rubujizuz.epizy.com/sage_crm_developer_guide.pdfIn PDF document text
    • http://lobulowigewimu.epizy.com/activity_diagram_in_uml.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_off0000d557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD557 5024 bytes
SHA-256: 81cf0decbcfaf21df2cf1fe22588cfbca425f661de1af13798bd8465c5ae9f3c
font_01_sfnt_off0000e67f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67F 10864 bytes
SHA-256: d188bb3c7ff73092031d536279d4bae165b16067d42cddc5967581996e189464