Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e99d4da3bda329…

MALICIOUS

PDF

68.3 KB Created: 2020-12-18 14:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 451de7a0ad890bac6f6a3acce0c08e82 SHA-1: 941597be509bfb74693fdc24a1dfa974d2826b5c SHA-256: d4e99d4da3bda32987f3f138103c37fb968d8927bfa8b432c1dbdfd1781cd2d4
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1190 Exploit Public-Facing Application

The file is a PDF document that exhibits characteristics of a phishing lure, specifically referencing an 'Emirates nbd corporate account opening form'. It contains an embedded URL pointing to 'trafffe.ru', which is flagged as a potential phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafffe.ru/aws?utm_term=emirates+nbd+corporate+account+opening+form PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jivamubug/13695600858.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/vector_calculus_equation_sheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fc1a17aa97599144e34da3b/1606525306763/babolat_drive_max_110_string_pattern.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/612139620.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e70d1452f90b7fe56088/t/5fc38a8818e72e5fdb4580dd/1606650504692/fajapiwaditi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc541af24b06a7eb31c2be5/t/5fd68a05313c42342b937927/1607895557925/xapojoloriderure.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51f41c30a162e0c6ddaa3/t/5fd66b035488895576acd278/1607887623733/google_analytics_demographics_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a51357-0c1e-43c4-ab07-6ed5a08eb341/dadonajamimebekasonono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b95d4e75-b1a5-4129-bd7e-4a39e25c80b3/kifegurulosanewaj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf61fa1972c46e3c96883f/1606377984413/nokenelirenojejep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa7e545c-7a94-4791-8476-a6e112775aea/hudson_education_association.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f916d9ac-c9a8-4ba1-add7-3f05419db925/80255163221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d57fab93-4179-4250-b243-7dd5db2da7e2/demon_days_rar_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/durubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46c55f9e-9530-4330-8f6e-4c125e9ec031/modab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd3a70ba-3a5f-406d-ba12-1d34f1d4f396/74590143369.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFFB 5420 bytes
SHA-256: 940b89f4144b13e4d43183fa9fe8b0b2ddced347f1b6edc484c87d477190918f
font_01_sfnt_off0000d241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD241 10528 bytes
SHA-256: 66615fa0324904a42cd2d70c9e95b52dc1d8c14aebebe2697accc017fbc5ec56
font_02_sfnt_off0000f613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF613 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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