Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ca8d3e66644795…

MALICIOUS

PDF

68.5 KB Created: 2020-11-10 22:24:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e5a48de80d6d7ae8ea20d91f9afc0e3a SHA-1: e1d292710a4ea8d806614e0b9fa6b3649666418d SHA-256: 24ca8d3e66644795795ed4fee107269143aa9f977d551431bcc7f2d3efc216a3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://trafffe.ru/aws?keyword=conflict+in+romeo+and+juliet+act+1+scene+1', which is likely a phishing lure disguised as a search result. The document body, though heavily obfuscated, appears to contain metadata related to the search query and the authoring application.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/aws?keyword=conflict+in+romeo+and+juliet+act+1+scene+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5f8aa9df0b836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402948/normal_5fa902cdb9b06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377936/normal_5f8fbe6ebf23b.pdfIn PDF document text
    • 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://uploads.strikinglycdn.com/files/e4d010f9-d9fc-4e66-956b-845858be1a86/83381582931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd3ff8e7-ca65-4673-bc6c-d98129290b35/87468909157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d2a829-b610-4c25-9f82-cf68c147add4/tafaboweninezupemupuko.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/tipimidirizofutuvotuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f9c8667-0965-43a3-ac3a-a9396f02691f/gilawopupo.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/chemistry_unit_2_worksheet_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52afa4fb-4ccf-49dc-863e-6cdee35a8b71/9003120073.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/wupodupunedapimej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/563d25db-21a8-41d2-a3b6-de5e30e36986/57931314433.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c42c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42C 5200 bytes
SHA-256: 17d52665770d957dacd737ce875b7a9815ac365e07ff6eac0d70e4ad7bcc9a61
font_01_sfnt_off0000d5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BE 9748 bytes
SHA-256: f254b9ebf5f569361c1201a9d94230d62d29771684b7d227d29e2c2e8bf456d3
font_02_sfnt_off0000f727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF727 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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