Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50ace0b377c6b8c…

MALICIOUS

PDF

72.7 KB Created: 2021-02-28 17:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ed59ef1405bf617d3414fa55a3e2801d SHA-1: 20c7499edd97fb0036b4b7d2568328a712611dbc SHA-256: a50ace0b377c6b8c7965cb1e19266fb9c38a0a25c8a25e20e419270b3a167f78
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/123?utm_term=how+do+sprinkler+systems+work PDF link annotation
    • http://pukoruserega.22web.org/garmin_nvi_255wt_update_kostenlos.pdfIn PDF document text
    • http://rodina38.ru/nijixum45iy7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443809/normal_5fed802f07b49.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/vabakenowub.pdfIn PDF document text
    • http://katermore.ru/sagoltjqsm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425919/normal_6017a033d82d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421062/normal_5ffd675633d44.pdfIn PDF document text
    • http://wedejopejujotu.iblogger.org/fegaf.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/oracion_al_espiritu_santo_iglesia_catolica.pdfIn PDF document text
    • http://priz24.site/20771029084trx7.pdfIn PDF document text
    • http://wetikufuwigiwox.iblogger.org/angularjs_filter_date_time_format.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/89941308774.pdfIn PDF document text
    • http://biolinkus.me/simple_past_tenses_worksheet1ipq4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369499/normal_5ff94a36d38fb.pdfIn PDF document text
    • http://sallles.ru/gantt_chart_template_for_final_year_projectbjdfc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B4 5112 bytes
SHA-256: 7e9df7fb391064ab0ac46b7a9a688d8238f61407501b2513fed478d9e3657909
font_01_sfnt_off0000f21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21E 10552 bytes
SHA-256: b2fc31089b0fefb7c93e3cd43334fb5db35e04989f28c5d16651ab00b3d3d012