Malicious PDF — malware analysis report

Static analysis result for SHA-256 333c2fc5e9ab5227…

MALICIOUS

PDF

64.3 KB Created: 2020-11-13 02:47:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3da027e53bf9aa731f0c3d7c651e2f75 SHA-1: 98317fbc6541a857114adf111bf9f2e36a84cb78 SHA-256: 333c2fc5e9ab5227bad474ae2e98c07a0e6924b94bdd000514ae38429561d0d8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, traffking.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into downloading further malicious content.

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://traffking.ru/123?utm_term=spring+microservices+in+action+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388282/normal_5f91240681127.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5f926decaaed2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459320/normal_5fa49c1d22064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5f8df207b067c.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/bb57d748-ebf8-4063-920d-d94052cc61f2/tenejowavigujeditatitoz.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/asciidoctor-_footer_image.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a659dc2b-845a-4fbd-9291-941609572925/guduzewenomibaroruwiw.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/blood_water_paint_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689cc2b5-28e6-4848-88f5-e74491918115/chrysalids_chapter_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/lilowovenuvunopuk.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/dafagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec2df0b5-0ba4-4cef-b6f2-10d523e8a71d/wodiwibidefexiwezid.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/xirinuvofevozigogepeduzet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bff0e3b4-448b-448f-9acf-22ac9ada5ea0/black_and_decker_air_station_walmart.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_off0000bea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA4 5732 bytes
SHA-256: e30e5e4b150b26a3c41d6af45a93b7671e50f6ea19cac258e1ce8885cf52e1b8
font_01_sfnt_off0000d227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD227 9976 bytes
SHA-256: 13be504aa8b7457d92fdc549ae089c76a2ffa7e631c63c77b46d5199df6a94d7

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