Malicious PDF — malware analysis report

Static analysis result for SHA-256 015a7239bf88e564…

MALICIOUS

PDF

75.7 KB Created: 2021-04-22 14:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 94d0f5232d77aab7d31172538fa796c1 SHA-1: 210c016e12e4da9b387ccefbbab271f8921c800a SHA-256: 015a7239bf88e5641032725050e54b57f8b6ede0ab552383d3b6ca27ddae934b
134 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on disposable domains, suggesting a link farm designed to obscure malicious intent. One prominent URL, 'https://nipisod.ru/strik?utm_term=eragon+2006+full+movie+in+hindi+dubbed+download', appears to be a lure for downloading content. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/strik?utm_term=eragon+2006+full+movie+in+hindi+dubbed+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369665/normal_5fe171e81a3aa.pdfIn PDF document text
    • https://poxejoretojav.weebly.com/uploads/1/3/4/7/134740271/3fcf6e79f0.pdfIn PDF document text
    • http://tejajugumoneton.66ghz.com/maths_genie_expanding_and_factorising_quadratics_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_603e510b8da2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489045/normal_6062d79e3cc6d.pdfIn PDF document text
    • https://pesulomerusetus.weebly.com/uploads/1/3/4/1/134109359/bibezezuzu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_605ca8a2b9fef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454435/normal_605f8ba424cbf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vamanufa.rf.gd/algorithms_robert_sedgewick_and_kevin_wayne.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/video_calling_apps_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9d929be-8635-4b40-a9db-e62ebd758b0a/magizigumoxeri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e296d16-97d1-4c52-9012-2d19e0e068b3/nolepaneruruvezokerotofo.pdfIn PDF document text
    • http://fanolegib.rf.gd/gear_cutting_tools_fundamentals_of_design_and_computation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9954e3ab-7ccf-4510-8a7c-7ccd41527942/51383720980.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/bunk-_style_guide-_ons_for_boat_trailers.pdfIn PDF document text
    • http://xijisunuma.rf.gd/bipitedofapemejafab.pdfIn PDF document text
    • http://nuzifopivezalam.rf.gd/futaferij.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/doteruk.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/venuxirorenux.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_off0000e867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE867 5820 bytes
SHA-256: 5abcfe9535e6fb5874449e790cd91da8ed4f51c98a5f696ac52a83373f908efa
font_01_sfnt_off0000fc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC23 10920 bytes
SHA-256: 314df388cf133cd12ea0ccc8f9a477265210e734e1655adc4a62405002957b31

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