Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa2efbded6bafcf…

MALICIOUS

PDF

79.8 KB Created: 2021-02-06 07:39:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f65e89274c8e3a2c072fa45896d4ee5d SHA-1: cca98f0b9f87fd076652d73f8c3e53470e138fdf SHA-256: 9aa2efbded6bafcfa5e49bc9190319df70c2e60bdae4d2b8ac702a2c5414a827
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/123?utm_term=skyrim+focus+the+oculory+console+code PDF link annotation
    • https://mufolatame.weebly.com/uploads/1/3/4/7/134745447/8974383.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482399/normal_5feba241746bc.pdfIn PDF document text
    • https://rubirilubuz.weebly.com/uploads/1/3/4/2/134266621/5cdf9e03.pdfIn PDF document text
    • http://peludofnor.fun/imca_guidelines_for_dp_trialsdqm7a.pdfIn PDF document text
    • https://cdn.sqhk.co/mezugifosa/hdhaDnR/26517144976.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/gjUJSig/men_s_color_block_denim_jacket.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450259/normal_5fe853af46fdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444377/normal_60013f4367039.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/ATigmou/62543146774.pdfIn PDF document text
    • https://zizuvikugit.weebly.com/uploads/1/3/1/3/131384696/fea3ed16.pdfIn PDF document text
    • https://resawipodejevi.weebly.com/uploads/1/3/0/8/130814711/rizukoxezugapogit.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/Vn67Ghc/modern_marketing_techniques_ppt.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/ihajaid/radio_top_40_hits.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/Ngdidjj/notebozevurar.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/kiwopusafize/75281718929.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/ofsted_report_oasis_academy_isle_of_sheppey.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/critical_incident_reporting_system_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/doraemon_cartoon_beta.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_off0000fd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2E 5320 bytes
SHA-256: 9ab452c386c53ae4ee646edd3a2cd732ae932dd22e76a69b189ef108687f1bfb
font_01_sfnt_off00010f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2D 10240 bytes
SHA-256: 2f16267fc8ece18b4252fe58c5eccef4746fbc188a77f031f0c507c037e99bbb

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