Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a62623b3890843c…

MALICIOUS

PDF

73.1 KB Created: 2021-03-18 22:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 01b64c6b1a1a55e9a23a8d8025243621 SHA-1: 3540cb37aa0fc6237628a18b4ce36c0bdd1e08b1 SHA-256: 2a62623b3890843c8c18b23b4613f11fe5e7e5ce737e068df204aebde5766fd4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous embedded URLs, with one pointing to 'lozipotod.ru', a domain associated with phishing or malware distribution. The PDF structure and embedded links suggest it's designed to redirect users to malicious sites, likely as part of a phishing campaign or to deliver a secondary payload.

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://lozipotod.ru/123?utm_term=subject+and+predicate+worksheets+grade+4 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403681/normal_6016366e9fe06.pdfIn PDF document text
    • http://wizomokupelew.iblogger.org/mokuxito.pdfIn PDF document text
    • http://duwulavodawu.22web.org/android_os_iso_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455198/normal_602a590d44bdb.pdfIn PDF document text
    • http://masexuzijavigap.iblogger.org/gowuvolabozonixanoribo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407327/normal_6025c8e68d372.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484375/normal_5ff38bfd829d8.pdfIn PDF document text
    • https://poteboxamakimef.weebly.com/uploads/1/3/4/3/134325651/wabekisiro_dosafunubog_xadanulatew_rilisi.pdfIn PDF document text
    • https://marelepo.weebly.com/uploads/1/3/0/7/130738501/lidexo.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/a697fbf2-102b-4f80-8bd1-cd1b23defb8b/how_do_i_turn_off_the_descale_light_on_my_cuisinart.pdfIn PDF document text
    • http://vuwurolu.rf.gd/rexilepanexikolonari.pdfIn PDF document text
    • http://vagilamiporaw.epizy.com/dental_hygienist_interview_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a42830d8-1dc5-49f0-bf80-ac2f7918a4ae/doterra_essential_oils_product_guide.pdfIn PDF document text
    • http://ridupokibi.epizy.com/54813716855.pdfIn PDF document text
    • http://venekeludoruxa.epizy.com/cursos_de_ingles_basico_gratis.pdfIn PDF document text
    • http://rerivumisiso.rf.gd/86048939520.pdfIn PDF document text
    • http://noderisaxe.rf.gd/34308723183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e482bce1-1d0d-47e6-8c04-b44c04139afd/how_to_clear_omron_bp786n_memory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b33350-c34c-4978-b350-0403eee1591a/lifuxaze.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_off0000de56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE56 5864 bytes
SHA-256: f84475b2823c72e2ccb978e952fac3cb975c39fcb4f6e665ec3e8470b08f436e
font_01_sfnt_off0000f261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF261 10728 bytes
SHA-256: bfc3966b742b04ef07be7a97070ac3279b299534a79d308f04f234956c509a38

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