Malicious PDF — malware analysis report

Static analysis result for SHA-256 24728d37be15eb0f…

MALICIOUS

PDF

81.4 KB Created: 2021-03-17 21:22:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f85606a331a82b5eb73a92cff5978dec SHA-1: 103a0e289355c95b2e19a59fa1c6e6e2a21b04de SHA-256: 24728d37be15eb0f3e4c74c16cb7f53778cdc43ea815add675a69cd9ad9a7e79
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9993

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://kuzutuzo.ru/strik?utm_term=skilsaw+circular+saw+blade+removal PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401989/normal_5fcd6342dfb8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391620/normal_5fffe70f37264.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416494/normal_5ff5b2106efaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_5ff0c7c50c28c.pdfIn PDF document text
    • https://cdn.sqhk.co/xanapaje/ibigNid/castle_jungle_world_run_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vamosopon/t3idfWH/99819130658.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_6047f16b62118.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wixudilasajigil.rf.gd/6455232676.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/afterglow_ps3_controller_not_working.pdfIn PDF document text
    • http://budaxixew.epizy.com/grand_bahia_principe_punta_cana_resort_map.pdfIn PDF document text
    • http://razujefipuwix.rf.gd/wofarutujepo.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/fedex_tracking_id_lookup.pdfIn PDF document text
    • http://lunagugodojeb.epizy.com/kupudobajet.pdfIn PDF document text
    • http://wefuzage.epizy.com/employment_verification_form_template.pdfIn PDF document text
    • http://sisakuwoxamale.rf.gd/adjectives_of_personality_list.pdfIn PDF document text
    • http://zunaxixe.rf.gd/munukesubekotek.pdfIn PDF document text
    • http://kugofabafomozo.epizy.com/31685934548.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/vatanataduxidafujolorev.pdfIn PDF document text
    • http://fakefujakarip.rf.gd/vocabulary_workshop_level_a_unit_7_choosing_the_right_word_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/62597280538.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8f2a4e-486b-425c-8509-6723a0543136/wooldridge_introductory_econometrics_reference.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/fluidized_bed_dryer_lab_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dce78176-966f-413a-9fd9-9f5a03546440/28166063816.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_off000101ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CE 5544 bytes
SHA-256: a78e4c44363ed42c637520332ad25911412f459d75a009b595e19c430256b76f
font_01_sfnt_off000114af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AF 10700 bytes
SHA-256: ca2bdc58c127382c23b380be5e4294549dcd0f625422ea6644e69adbbd587a83

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