Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a05db266298031…

MALICIOUS

PDF

68.5 KB Created: 2021-03-14 06:50:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 179cdcafdcc166fdb799b85b4dac6969 SHA-1: c0a5cae5f1a87d702ca180d4d02ea56773a9037c SHA-256: 80a05db2662980317491fa349f3f8dfeac384247915c6efbd2220a45751170f9
126 Risk Score

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 0.9996

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://mezovuduw.ru/123?utm_term=watch+movies+online+websites+without+ing PDF link annotation
    • http://alania365.ru/jexobododoxadekizetitipet9hqfh.pdfIn PDF document text
    • http://good-production20.site/14163165835efbrw.pdfIn PDF document text
    • http://robolab.one/orbit_12_station_irrigation_controller_manualh7kwc.pdfIn PDF document text
    • http://nukepaxin.iblogger.org/84587635959.pdfIn PDF document text
    • http://shtampshop.ru/the_veyil_tamil_dubbed_movie_download_tamilrockersjgqy1.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/384b3061-4f1c-4287-b948-8b6587de7faa/multiple_intelligence_survey_for_elementary_students.pdfIn PDF document text
    • http://zotijoxamofos.epizy.com/janerakuso.pdfIn PDF document text
    • http://voxavupe.epizy.com/search_a_document_for_a_word.pdfIn PDF document text
    • http://rulukufijozijud.rf.gd/how_to_setup_tp_link_av600_powerline_starter_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffcf836d-e4bd-4007-ba28-8df93406799b/lidilubemakoduraror.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5098ce-c0ec-46a2-af5a-44110d9246fb/2012_highlander_liftgate_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29a180cd-9321-4ae4-93a7-150215cc0fb5/similar_right_triangles_partner_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e965822-1a6b-4423-a597-68eb3eba5f94/nomamexejenevedefisaxot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980e0c98-786a-44f4-88b2-989bddd5b539/how_to_do_scientific_notation_on_ti_34_multiview.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/borussia_mnchengladbach_bayern_monaco_formazioni.pdfIn PDF document text
    • http://tozoxuzev.epizy.com/diet_challenge_30_days.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/fexopulinixijanenuxumomab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd67c49b-0f28-4f88-b70b-27644c3f858b/57598265571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d00d91-e140-4840-8b5a-819853f4c0be/7852695524.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/biomagnetismo_medico_rastreo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bcc7c47-453a-4ae5-a286-08178ee50069/is_the_alienist_on_netflix.pdfIn PDF document text
    • http://gigavolaxo.epizy.com/nemalowusatarixegejatono.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_off0000d020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD020 5424 bytes
SHA-256: 805626debb429aecc09c84da029d0a1159cfbfca01e093e2e4b9344e18cd12bc
font_01_sfnt_off0000e28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28D 9912 bytes
SHA-256: 9ecd840db58bff0ddab2635023fc3d8bdaf5a1baaa145aee129b7ccdc6c7058b