Malicious PDF — malware analysis report

Static analysis result for SHA-256 c348b5751181e16a…

MALICIOUS

PDF

81.1 KB Created: 2021-02-27 13:13:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: cf40ac899a521ed52fd4e9acd041c6ac SHA-1: dd6f5c742209980552bd709a6ab79ad03cf86eea SHA-256: c348b5751181e16acec058d2044d7292041f8ff9c5b57d8c19b426ec319ee2d6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, masquerading as a search result. This indicates a phishing attempt to lure users to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/strik?utm_term=is+powerline+safe+to+use PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376099/normal_60208835c4b0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_5ff29dc821558.pdfIn PDF document text
    • http://bamovewube.22web.org/victoria_secret_show_performers_2017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483075/normal_5fd10449bc799.pdfIn PDF document text
    • http://lozavisimas.22web.org/vio-_lence_oppressing_the_masses.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402938/normal_5ff9d4e40be96.pdfIn PDF document text
    • http://tedamowajowiw.22web.org/40684025974.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/voropa/xomisavonijasine.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/tidal_fraser_river_fishing_report.pdfIn PDF document text
    • http://bowudizukeb.epizy.com/97635780137.pdfIn PDF document text
    • http://redobigugiredu.rf.gd/how_do_you_round_to_the_nearest_hundred_thousand.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/kigufavemo.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/libro_reproduccion_animal.pdfIn PDF document text
    • http://sasoregasot.epizy.com/ca_books_icai.pdfIn PDF document text
    • http://pujusojup.epizy.com/78158061019.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_off00010241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10241 4924 bytes
SHA-256: 46ce7c402b1f7e9cf706d090cd23a7cf5efc306f4c78f512a488b287d6a82a1c
font_01_sfnt_off00011323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11323 10748 bytes
SHA-256: 404b928475d60b47f20646ac749bba6d2379f078052bd8d0f3b3842f5f1c7840

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