Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c63be035f2160f5…

MALICIOUS

PDF

59.4 KB Created: 2020-12-05 09:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e40db0d31ab5cfe106a988e9ac61cf90 SHA-1: 918c0af44f9cfbfe98338677bd47cc1e93c6f53f SHA-256: 9c63be035f2160f50b6788f968f0025c23d02d55ff6bed90b06f2c62f218c23b
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 0.9996

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://trafffi.ru/strik?utm_term=www.gohealth.com+admin+america PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388173/normal_5f9d9b63295a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375885/normal_5f8a2d0e81be7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415321/normal_5fab7194253a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416671/normal_5f9b025d6e022.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377403/normal_5fc80e5e63b2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_5f9504b6a39be.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/xidulumexi/angiografia_mesenterica.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d2cadf132613bbd6bc3a/t/5fc8d7f3e21c7c679aedd9de/1606998009810/asteroid_belt_kuiper_belt_oort_cloud.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/business_english_phrases_and_expressions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e913f9866f3fd2edae8c/t/5fc5917c3c6ccf69f31e18dd/1606783357466/writing_workshop_the_essential_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e80068612547ed5e2b99/t/5fc34a982dd96f59185804ae/1606634136872/gallery_vault_pro_key_apk_1.2.1.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/danomamapuzik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75b0fea-9cb7-4860-a26e-4ee8a50ca5ef/kadufaregusoneregezije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/438c9d36-6751-4327-a10f-7642800479f5/benzoic_acid_recrystallization_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/angor_et_infarctus_du_myocarde.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_off0000ad5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD5E 5312 bytes
SHA-256: 076f5f7d7322f1cd3f82cb20c6597046a8d16ccddcb0e27dbc910aeb99cb9c48
font_01_sfnt_off0000bf62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF62 9940 bytes
SHA-256: a99c3d252f38cd8e2239cec7a55c16450b0f0b3357592aca1f80d18b366660a0

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