Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc3eabca7967897…

MALICIOUS

PDF

79.4 KB Created: 2021-05-24 05:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ff271c3deabd80865c3ba932dfd81106 SHA-1: 570608d2c7e221e8d784dc1866f9f77aade29764 SHA-256: bcc3eabca79678979d66e40b6e179c2f9d431feb66131cf9d63f44a76c0044aa
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 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=alachua+county+court+records+gainesville+fl PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479705/normal_60481460e143f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450624/normal_5fcfa43f57b67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425768/normal_5fc852d850b5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454546/normal_602e611ba4d80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416790/normal_5fe402b836317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457006/normal_606629830da9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370063/normal_5ff0088c65a71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506131/normal_6027c0500f5e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_6000542b09197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405420/normal_6035f03a4cf62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453528/normal_5fc649bce4503.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/mejigavukolu/19390320237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de39688-4655-4d0d-a3a8-8b6a5a1c31a6/jlab_jbuds_air_executive_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/nfl_football_live_stream_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/62613138953.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/guided_tissue_regeneration_indications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/630c89df-f1ec-4f24-9426-3c4c4e6a38b3/1025332348.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/information_systems_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8855be-821b-4d99-a0db-5d211a22e91d/kokezivelixepugaxuku.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/dbt_group_therapy_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/255ce568-b3b0-4436-9a78-73f44fa6a8c4/nizarobu.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/81969840046.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f5c028b-5edd-43a5-b745-ae02901eb624/primeros_auxilios_psicolgicos.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_off0000f5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AA 5432 bytes
SHA-256: a3ae93e772a516a2395c9851aac993275bb6afc56b3ad8f0d2b1cd16694506b4
font_01_sfnt_off00010831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10831 11068 bytes
SHA-256: 4018cac33492283e004f1012d3f07c7a777c654c4056fd03b109d3635d878e4a

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