Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f1a5e4cf72b47b…

MALICIOUS

PDF

75.5 KB Created: 2021-01-27 21:41:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 0bd8259f0395e96c90a9cde17013e8f4 SHA-1: e2b4b0bcd33aeaca1c8bc56cc7996d8594578ea6 SHA-256: 36f1a5e4cf72b47b4e3826529cd4b164de732ae407df940b1dc6233d7504055b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://bologen.ru/123?utm_term=naia+football+championship+tv PDF link annotation
    • http://bogavevi.22web.org/83593821425.pdfIn PDF document text
    • https://mikudope.weebly.com/uploads/1/3/5/3/135305195/wusenufuderij.pdfIn PDF document text
    • http://nopubejojawe.22web.org/4433882250.pdfIn PDF document text
    • https://tizelizenofus.weebly.com/uploads/1/3/0/7/130740364/boripedonelur.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/dG01hbc/20244416447.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pagiwufuvefukuf.epizy.com/diwufogozume.pdfIn PDF document text
    • http://dulubuli.rf.gd/dvdvideosoft_free_avi_video_converter.pdfIn PDF document text
    • http://komoxam.rf.gd/vocabulary_worksheets_5th_grade.pdfIn PDF document text
    • http://varoniwarovez.rf.gd/pamiwagoxosuwosowofetev.pdfIn PDF document text
    • http://dubejatusir.epizy.com/diefenbaker_lake_fishing_report.pdfIn PDF document text
    • http://jufomotapi.epizy.com/35971482844.pdfIn PDF document text
    • http://wekidezeze.epizy.com/peg_tube_removal_procedure_note_template.pdfIn PDF document text
    • http://bevonox.epizy.com/zuparedirawe.pdfIn PDF document text
    • http://pefodajisotavuk.rf.gd/razutumipizupe.pdfIn PDF document text
    • http://fufifaramulemi.rf.gd/candidemia_infection_guidelines.pdfIn PDF document text
    • http://mesovinofezesat.epizy.com/aix-_rpm_6._1._0._0.pdfIn PDF document text
    • http://kagokonutuvep.epizy.com/precalculus_book_free.pdfIn PDF document text
    • http://febiked.rf.gd/apache_directory_studio_linux.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_off0000e8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EB 5328 bytes
SHA-256: d4aae9b9629302db98786aa7d17ae634c4e6f38e68936270c2a8c1be2b4cd3a7
font_01_sfnt_off0000faf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF6 11232 bytes
SHA-256: 8856d808ccec06d9e5d22cccc2f83a32c7be5e48232bf7fd9ce2f1a476032d15