Malicious PDF — malware analysis report

Static analysis result for SHA-256 643d6047703fd709…

MALICIOUS

PDF

85.3 KB Created: 2021-05-18 04:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: afdcfa4fc48fbe976bfb97c00566b885 SHA-1: 0a93d9854c5524925e271fe593b8a9b8427696eb SHA-256: 643d6047703fd709014644deb3b8e05d593a6f54e737a73120f44a837d3c2913
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 0.9998

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=5.3+independent+practice+answers+7th+grade PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483855/normal_60682a946999f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403819/normal_6021e958b7fe9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470689/normal_5fe9381011375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530429/normal_600eb0a5e8b8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426967/normal_6011b4ee684b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383702/normal_604351fd768de.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/7478f512-73af-42a6-a563-6d55077fb43c/36248507541.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/assam_university_registration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/zitepugipojijanamed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7dff224-54cc-42db-8d5b-cc2c7a756ed6/cfa_level_1_books_amazon_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/594f5e33-2351-48ed-bb07-e4a555fae4c5/line_6_spider_valve_mkii_hd100_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/taranedenufiwujunipuxaki.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/79547917010.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/29164454443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/632c4d7b-6dde-4335-886a-70534e0c179e/diccionario_espaol_ingles_gratis_en_linea.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/equifax_canada_free_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/2069976609.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/logevamuwawegatetakuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ede84b-7c1c-470b-9c53-32e8dd2f315c/74566098689.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/european_commission_albania_progress_report.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_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 5700 bytes
SHA-256: 3f53d6b255cf1cb1796f42b97c73eb37c1e839616edd819b48fd7254bc599166
font_01_sfnt_off00012231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12231 11084 bytes
SHA-256: 894da10c6f89bde397bedd263c11ddbc0c4af7476f8b591d4837c271ab9e7dfd

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