Malicious PDF — malware analysis report

Static analysis result for SHA-256 543573a12ec1018e…

MALICIOUS

PDF

75.6 KB Created: 2021-03-23 04:21:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 935e25da4cba34dc073c398a5880b31f SHA-1: ac59cfbbbd62ea931fe259e541bb6a5ecf092fde SHA-256: 543573a12ec1018e526a0880ca53e4c3de37f20fb44e1bd43025dd5b34a30de7
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://resalured.ru/wix?keyword=draw+play+off+euro+2020'. This URL is associated with a lure related to the 'euro 2020' event, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. No scripts were extracted, but the presence of an external URI in a malicious PDF points to an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://resalured.ru/wix?keyword=draw+play+off+euro+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474218/normal_6028ecde5b4e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487632/normal_5fe9c723231ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424405/normal_603b7a8d7f376.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449181/normal_6031605b9234f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425728/normal_5fe0470fadb4a.pdfIn PDF document text
    • http://rotiwopofeze.mywebcommunity.org/97932992872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501383/normal_5fd8e7b9608d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380527/normal_5fe8571f70ff4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fe1a6761a60f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2e404ec-eb94-4f7d-a6b2-582e4ef7879d/latest_news_india_pakistan_live_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/adaptec_storage_manager_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df5b658b-16d1-4253-9dd5-66e28f156a80/when_you_love_someone_so_bad_it_hurts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365e8577-7cba-4bc1-a6e0-9f471db69c50/vebanazimuzoveso.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/what_is_human_biology_course_about.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/how_to_report_mediation_analysis_hayes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd6c34c3-c0d1-47dd-a20d-38c1f51562c2/rca_universal_remote_control_codes_for_sanyo_tv.pdfIn PDF document text
    • http://pekamidakoj.atwebpages.com/spinal_anaesthesia_anatomy.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/best_indian_penny_stocks_to_buy_now.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_off0000ea0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0F 5184 bytes
SHA-256: 57b51a532df772e5dec60277b04b961f78ccf32d836caf4c73202692eb1ca35a
font_01_sfnt_off0000fbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE3 10600 bytes
SHA-256: b32d3e2c336474072e635510e7a056fc43aa5c343b68899392c477e3c480d83b

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