Malicious PDF — malware analysis report

Static analysis result for SHA-256 b586c7a9aff458f4…

MALICIOUS

PDF

73.6 KB Created: 2021-03-03 22:01:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 15518e37bd692adfd9a1dc857d35ceb8 SHA-1: 402cb81da52cd4e598c36e6319f1f1bf94ca197c SHA-256: b586c7a9aff458f466c46e17b903ac4e02660c9db5679a230e8bf084ebda43fd
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://jumiwimov.ru/aws?utm_term=how+to+type+a+paper+in+mla+format PDF link annotation
    • http://souve.me/24559865924ip2l5.pdfIn PDF document text
    • http://hamlikjorettoop.ru/dotted_cursive_writing_font_free0z6fm.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/mastering_the_art_of_french_cooking_volume_2_recipes.pdfIn PDF document text
    • http://bilkaita.space/jalabadenodinagovifupesapyug3f.pdfIn PDF document text
    • http://lerawutevokaj.iblogger.org/67511074848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528915/normal_60242ac5e8585.pdfIn PDF document text
    • http://kefijor.mygamesonline.org/cuando_es_el_mejor_momento_para_embarazo.pdfIn PDF document text
    • http://100p-f.ru/exercice_vitesse_6eme_physiquehjbs0.pdfIn PDF document text
    • http://gizigevom.mygamesonline.org/drinkwell_platinum_pet_fountain_troubleshooting.pdfIn PDF document text
    • http://fipizilemuwob.medianewsonline.com/fitexujanotujagerete.pdfIn PDF document text
    • http://fipizilemuwob.medianewsonline.com/what_are_spanish_possessive_adjectives.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://denawovusu.rf.gd/rapiligifug.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/quarterly_reporting_requirements_us.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/swayam_online_registration_form.pdfIn PDF document text
    • http://rozizujis.epizy.com/57792438562.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_off0000e60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60C 5024 bytes
SHA-256: 5fb6056060ba13a067f00bf7e3139308106d9f83c6b846f25dbd9022f6508aa0
font_01_sfnt_off0000f727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF727 10128 bytes
SHA-256: 470794b423344de8d7d12f13210a290ce10b5ac01baae85a7b4f05e9b6c55384