Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dc0e300f7baf3de…

MALICIOUS

PDF

67.5 KB Created: 2021-03-09 16:25:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 948b80a7bed56dd5fdcdc73ad7c47e27 SHA-1: ebaa860a304c4fa69c27657448ddeb5090ed5a60 SHA-256: 5dc0e300f7baf3deb54f05f18b4e4864c2f4d936aad73fb58203a6e6dee6088c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru' which is likely part of a lure to trick users into downloading a payload. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a second-stage malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/123?utm_term=argos+android+tv+box PDF link annotation
    • https://cdn.sqhk.co/girewobo/OAhbhc6/download_motogp_racing_2018_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/suzeboxiwo/ejbBQhi/gekowaruf.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/bhjuhbH/e_bike_conversion_kit_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367290/normal_5fc81b2305153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_602228afac2bf.pdfIn PDF document text
    • https://cdn.sqhk.co/pegebatanuz/hfFKC6n/airlines_information_systems.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425515/normal_601730076c935.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/jcTgdhc/28667019068.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/tidigudetefumof/best_brightening_mask_sheet.pdfIn PDF document text
    • https://a146b927-ed54-472d-b3a8-6b137e313b92.filesusr.com/ugd/4d400c_88b918765c894dfb8f32f6abacd385c8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/facebook_lite_very_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/arch_linux_iso_64.pdfIn PDF document text
    • http://dejanubotikepiw.rf.gd/92373349582.pdfIn PDF document text
    • http://sololawake.rf.gd/how_to_store_nimh_batteries.pdfIn PDF document text
    • http://rilobun.rf.gd/business_code_of_conduct_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/92594247614.pdfIn PDF document text
    • https://504706c9-3a86-45eb-876a-6494ef133fff.filesusr.com/ugd/80c1db_03b67d0ae9cb4eb4b2687d5245c512cf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/86040427520.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/lagu_afternight_project_for_you.pdfIn PDF document text
    • http://besasasef.rf.gd/mububexitevojejisak.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/40938141651.pdfIn PDF document text
    • https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_dc32e53c08044214b8fdc0396952173c.pdf?index=trueIn PDF document text
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_efed787b33c24bf793536a78db74898f.pdf?index=trueIn PDF document text
    • https://72b50e20-f79f-40ca-96b4-24bef83e308f.filesusr.com/ugd/1a1092_f01f7ba1252142908ccda84f89c71a02.pdf?index=trueIn 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_off0000cd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD6E 5220 bytes
SHA-256: 62e6b132271ad2468d0d6246cc02866d83f8fe19a5cd899af91a67f772f47ea0
font_01_sfnt_off0000df44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF44 9860 bytes
SHA-256: 9da18d7d3480444e45c06cdb7d8e681fb870e5df384e08f188540b4bfb8a0f9a

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