Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4206d7be76e79a9…

MALICIOUS

PDF

72.7 KB Created: 2020-11-25 02:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 34276b4a719f226c07d53bd2b6f1ff35 SHA-1: 1b502003edee7e92afa2829a1d4a9fd42062ede2 SHA-256: a4206d7be76e79a9087b7888016488d81f625f44c4fa661fc0e5192ba7ff5102
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'trafffe.ru', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Michael Jackson pyt video'. No scripts were extracted, but the presence of an external URI and the nature of the detection suggest a phishing attempt.

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://trafffe.ru/strik?utm_term=michael+jackson+pyt+video PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465123/normal_5faf760fa1866.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_5fa7cb717706a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_5f8be576e7578.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5f88b6759acff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f8d7fe3e5433.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_5fa9b2a3934e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455898/normal_5fa78a2731d3c.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/jeponowon/2020_class_b_rv_with_solar_power.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea687b5e-f925-4838-972f-0940926c5929/fredbear_s_family_diner.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/definition_of_form_perception.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/48_hours_full_episodes_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/pupaseloditomi.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/mufoneverukedaxigabalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c637ac6-ace7-46e5-b5b3-ba5951e32a2f/52025281691.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/technical_specification_document_template_software.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/43510285265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a9bd89e-6c5a-44f1-a522-b5a4021bd7a5/rekumobumuvuw.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_off0000de37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE37 5372 bytes
SHA-256: ecba695f490c08a66e7a22e580f6577072ffff3c74f9bc0f9f30a84cf6663341
font_01_sfnt_off0000f09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09E 11048 bytes
SHA-256: 714c31e5ed1c7e8376d0ea2c8d716fd7185c5dcc921f21948002f543d52e957f

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