Malicious PDF — malware analysis report

Static analysis result for SHA-256 60599db9bf6021db…

MALICIOUS

PDF

110.3 KB Created: 2021-04-29 17:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 5ebbb835d498d0355ee6bdf711d47a48 SHA-1: 5d01d8f138b683c05f7d6ec747fb5cfffc235bf6 SHA-256: 60599db9bf6021dbae2999a1d30d342851c101a9d18f037cb98ed43ce82e4fcc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL leading to a suspicious domain ('vilenefex.ru') that is likely part of a phishing or malware distribution scheme. The PDF's structure and embedded content suggest it is intended to trick users into clicking malicious links, potentially leading to credential theft or further infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/strik?utm_term=onkyo+tx-nr626+manual+espa%25C3%25B1ol PDF link annotation
    • http://tibisibafub.iblogger.org/star_trek_discovery_cast_season_2.pdfIn PDF document text
    • http://nenugatigubom.66ghz.com/xejagetaxodomebixasikadip.pdfIn PDF document text
    • http://igcopyrightverify.com/heil_furnace_parts_manual3frwu.pdfIn PDF document text
    • http://missunik.space/bernina_830_record_electronic_manuala7x7d.pdfIn PDF document text
    • http://tvoy-ogorod.online/navidudamokumitexvb4p.pdfIn PDF document text
    • https://cdn.sqhk.co/fitodofafe/dVvdzbA/91014537411.pdfIn PDF document text
    • http://tells.fun/tetukafekafipotutpxr2r.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/cicEbwk/vesomomurakufojibonenavem.pdfIn PDF document text
    • http://forajadafogaxuv.medianewsonline.com/giferibigawomela.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/python_tutorial_for_beginners_windows.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/513eca27-9ef3-4a51-85b8-ea0102b5fde9/breville_juicer_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45afd364-12b2-4ecf-a309-5b5ea61c3988/on_the_road_movie_watch_free.pdfIn PDF document text
    • http://rawibejib.epizy.com/86012514350.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/email_attachment_format_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb6881e5-05b0-4afc-8f06-0921d03d6d08/medicare_benefit_policy_manual_chapter._8_section_30.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/478b512f-8560-4964-bb02-75697e78bbf1/3_grade_worksheets_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/gudinomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c513b641-9dd0-4d53-8317-ad37ab9d2e9a/sesazukuxu.pdfIn PDF document text
    • http://subogerilazelo.atwebpages.com/advanced_excel_training_material.pdfIn PDF document text
    • http://napusikut.epizy.com/masogawelusizolamugax.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_off00016f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F04 5756 bytes
SHA-256: 7cff45cc39ab6ef023040f6b8cd1c7d57adc5056779627ff8574940bbd23c407
font_01_sfnt_off00018252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18252 11408 bytes
SHA-256: bbf7d06e07f182930d2707db002dd13a3d13cf8a6d135c010ce272b68240f0d4

Open this report in the interactive analyzer, or submit your own file for analysis.