Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ac5c813dc1bb9b…

MALICIOUS

PDF

69.2 KB Created: 2021-02-24 08:34:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b869d5ab71e5955be245687de5002b69 SHA-1: abcf32fbe90e7e5a5a2c5e814ab24110a9ed03d0 SHA-256: 95ac5c813dc1bb9bbd6267575ca8a4dd08341e2c8b4893ebee93feb51b7ad66e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as a search result. This technique is commonly used in phishing campaigns to trick users into visiting malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://seumenha.ru/aws?utm_term=what+is+the+main+theme+of+the+adventures+of+tom+sawyer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368953/normal_5fe0b07d08596.pdfIn PDF document text
    • http://alexsaf.ru/31901163134pc561.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/kubafezin/bulk_density_determination.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/information_security_mcq_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/sinigakatateni.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/clock_the_vault_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/butterbeer_harry_potter_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/seboxeja.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/zedik.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/derivation_of_ellipse_equation.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/football_history_quiz_questions_and_answers.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_off0000d22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22E 5384 bytes
SHA-256: 4562d51e1e767469c27836aab65c28fc5a43fafc63556bc9fb15d13120eeba9d
font_01_sfnt_off0000e46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46E 10332 bytes
SHA-256: ecde635e58e88576683263a7844a91095b521570be22bfb47815e17978d329c9

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