Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4611b895b426bb6…

MALICIOUS

PDF

78.4 KB Created: 2021-02-21 07:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b93476f3e8cbf5b56c6cf13c267b653b SHA-1: d22a0cf9da15f783adeafccf0dc1807ef9c1c0e9 SHA-256: a4611b895b426bb62b99abda39938493f6d853437b867bc3de602becaa56c3bc
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://druttle.ru/strik?utm_term=what+are+two+characteristics+of+greek+art PDF link annotation
    • https://cdn.sqhk.co/kuvokitebixe/VghridA/lil_alchemist_best_silver_combo_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/g5ijXgc/waxojumafajoxa.pdfIn PDF document text
    • http://cmbespaceclient.xyz/masomeldokt0.pdfIn PDF document text
    • http://cozyplacefor.rest/is_toasting_bread_a_chemical_changekzoqf.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/hfhgqja/fopaxafewunim.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/jgKhegc/4706868838.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/Wrfjhgg/kibivur.pdfIn PDF document text
    • https://cdn.sqhk.co/rozamulev/Qhcxhey/lepasij.pdfIn PDF document text
    • http://makedctl.site/spanish_reading_comprehension_worksheets_high_schoold6pul.pdfIn PDF document text
    • http://wbigs.space/exponents_practice_worksheet7ofvz.pdfIn PDF document text
    • http://dronextactical.xyz/manual_de_impresora_brother_mfc_8480dnncicz.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/4hdgjl0/dinezasupiles.pdfIn PDF document text
    • https://cdn.sqhk.co/kizajituxab/OphfOhj/kurinijesejumufa.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/buK7ihc/13263404801.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/gavobawum/jsonformat_set_timezone.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/figebomitisusizativ.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/travel_poster_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/wedding_invitation_templates_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/html_css_templates_without_bootstrap.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_off0000f742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF742 5280 bytes
SHA-256: f9934f7fbef066de63d7053bb6c649bfd9aadeea22711e4f58c965b380453202
font_01_sfnt_off00010950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10950 10208 bytes
SHA-256: 2597b299a4432a5d148bab5839b999a1fe4745205f2af875a3d16c8dd3b8b774

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