Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74231ef2472b3a3…

MALICIOUS

PDF

71.9 KB Created: 2021-02-26 14:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bc92989da5051979c5b4b180daa2ccad SHA-1: 45177c9b18ce92bcc97d88559dfcd28a30235d26 SHA-256: b74231ef2472b3a3fa27707b074fbd598f84829c41c54abd1be9d5303bc7e687
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=tabla+de+conversiones+de+fracciones+de+pulgadas+a+milimetros PDF link annotation
    • http://kerutugizuxig.mygamesonline.org/asp.net_tutorial_with_c_sharp.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/gikgege/92251627825.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/historia_natural_dela_enfermedad_diabetes_mellitus_tipo_1.pdfIn PDF document text
    • http://retamos.mygamesonline.org/73739399744.pdfIn PDF document text
    • https://cdn.sqhk.co/zidezofa/7geDhic/wajivi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465949/normal_5fd379430b06c.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/NExuhhf/your_car_parts_promo_code.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500887/normal_5fcec0c32d77a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475728/normal_6006e277300c7.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/hMieApE/17051168047.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/dewakoduvinunowap.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/ijeieja/sudadiliwuzefobelurebemo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368246/normal_602264617968f.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/sebunuzu/43729563543.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/what_percent_cocoa_is_hersheys_milk_chocolate.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_off0000d752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD752 5624 bytes
SHA-256: b7f9bcc574354c791716de11ad2369839bb4620b346fa37b3254117124cd07f9
font_01_sfnt_off0000ea65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA65 11636 bytes
SHA-256: 2a9d4533a6263af9fc19085d53f2faec0991d78129f32207eb106c33d9520a36