Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cacbe466ed8f01d…

MALICIOUS

PDF

82.1 KB Created: 2021-01-04 16:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7c0ab2254761fe0148b168942c5363a4 SHA-1: 9b3582e309b4f28b66cf435e531103ed98221280 SHA-256: 0cacbe466ed8f01df328d8e1ff320a607d5b95663cee10a3d8777bab41229ce5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit user curiosity related to the document's apparent topic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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?utm_term=ergogenic+aids+athletic+performance PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367289/normal_5f8a30071f5a1.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/jbRWgjj/marktplaats_app_english.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://s3.amazonaws.com/nokiva/bairavaa_songs_free_in_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/xatukokituzutodujab.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/jatafa.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/business_model_analysis_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bff64ad9-f56d-4996-9117-57304c7425de/lugewepanufoxubuzinipo.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/whose_epithet_is_the_radiant_woman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c6622c8-001a-4520-a380-7fbbbe4cbe5e/list_of_adjectives.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/532dfecc-23aa-4fb1-8ffe-cc0d26b4c5d9/17237701896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f29fa77-c576-4f2c-af2e-b5ec56365b61/human_body_systems_2.3.1_conclusion_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c3c437-6dc0-4f47-86c5-3ad69dd61ba1/28334293626.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_off0000f5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E3 5312 bytes
SHA-256: db6977e291b2bd6b08673fafcf3710a0a3a0190029f17c731327f6527aa581b2
font_01_sfnt_off000107c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C1 11396 bytes
SHA-256: 8e54efa202540d37fa1bca05e72a31f1ae4a66781c3bdb4d7af7880513aa7552
font_02_sfnt_off00012dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD5 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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