Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6da153080735de0…

MALICIOUS

PDF

78.0 KB Created: 2021-04-25 03:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fa8f45cdc533206cc4b92c05a19ed380 SHA-1: 5081c178ef1ad8b6e98a09a644d8b4a396c95033 SHA-256: a6da153080735de0c4da5de8d1fb6f3340deb382b2ff066327696c2c8b10dc54
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/strik?utm_term=blood+of+eco+friendly+products PDF link annotation
    • http://kopolade.22web.org/fukuresaviwovaned.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/taber_s_medical_dictionary_23rd_edition.pdfIn PDF document text
    • http://gupupokuvugal.22web.org/does_either_configuration_violate_hunds_rule.pdfIn PDF document text
    • http://bonozowibewoz.mypressonline.com/agile_project_management_with_scrum_by_ken_schwaber.pdfIn PDF document text
    • http://prolac.ru/independencia_de_sudan_del_surqjlin.pdfIn PDF document text
    • https://fekoguto.weebly.com/uploads/1/3/4/4/134491689/sudexowud.pdfIn PDF document text
    • https://detaxotipag.weebly.com/uploads/1/3/4/7/134730838/a32205d.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/abrsm_grade_3_music_theory_past_papers.pdfIn PDF document text
    • https://lewebivaduxug.weebly.com/uploads/1/3/5/3/135392118/sawar_zaleja_zegos.pdfIn PDF document text
    • http://pakupuxojopef.getenjoyment.net/how_to_calibrate_astro_320.pdfIn PDF document text
    • http://cenderaoriginator.com/vcenter_6._0u3yx28g.pdfIn PDF document text
    • http://talajifit.mywebcommunity.org/docs_to_converter.pdfIn PDF document text
    • http://voicebftyi.com/68627552342bko4c.pdfIn PDF document text
    • https://rilemiwekeb.weebly.com/uploads/1/3/4/5/134599700/gudadenodidov.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/6a3edbef0683cb.pdfIn PDF document text
    • http://my-favshoph.online/25859486797gqgrz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/46706653-8588-4d64-8aae-ce082cac6aae/pudogopenifoxubefuxenini.pdfIn PDF document text
    • http://sofidubanelen.epizy.com/statistical_techniques_in_business_and_economics_17th_edition_answers.pdfIn PDF document text
    • http://tatatomoti.rf.gd/rudram_telugu.pdfIn PDF document text
    • http://zuruwejofuxeja.epizy.com/xidax.pdfIn PDF document text
    • http://xesogopobatobop.epizy.com/81554337942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d744c46-db5b-4bb8-b327-ca0763c89466/28786166024.pdfIn PDF document text
    • http://juvudujaxajiji.epizy.com/will_pretty_little_liars_come_back_on_netflix_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5628b83a-06ad-4bd9-86e1-f5fcdd866b68/65000629594.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_off0000f23a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23A 5092 bytes
SHA-256: 428f35bad2649fa636c4975b7527fc0dea612e4f80eaa441528aa9f831b004a0
font_01_sfnt_off000103ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AE 11044 bytes
SHA-256: c375f872a3758c87de38fb938b6b3f438c366ba1099a9e0ae74924cc922498ab

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