Malicious PDF — malware analysis report

Static analysis result for SHA-256 15215b894bae94ab…

MALICIOUS

PDF

76.6 KB Created: 2021-03-03 04:03:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5cbb676a321675e7b422f8510e3c031a SHA-1: 36d1c3971e8560116f60e5db425a78ff945d6198 SHA-256: 15215b894bae94ab8629a64bd200f08ada5002f3d1e9131a70f511cfea7e841f
186 Risk Score

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 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://ponafet.ru/award?keyword=chapter+4+development+across+the+life+span+quizlet PDF link annotation
    • https://pagopolekabob.weebly.com/uploads/1/3/4/3/134305888/e58eda3333923.pdfIn PDF document text
    • https://kazamudadi.weebly.com/uploads/1/3/0/7/130775411/kusobikiluvu.pdfIn PDF document text
    • http://pasendapp.online/taxeg15hzm.pdfIn PDF document text
    • http://timecodes.net/putudatimapiwuset7811.pdfIn PDF document text
    • https://vafumesaz.weebly.com/uploads/1/3/4/5/134589630/5933821.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469631/normal_5fd82af1e610e.pdfIn PDF document text
    • http://dunizajo.66ghz.com/59128225280.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478946/normal_5fef7dbc4e10a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479441/normal_5fde93ff55248.pdfIn PDF document text
    • https://dawekemukodo.weebly.com/uploads/1/3/4/4/134491409/nimiful.pdfIn PDF document text
    • https://bobovisosusare.weebly.com/uploads/1/3/5/3/135394734/favonubusa.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/8060564.pdfIn PDF document text
    • http://thehensleys.org/simple_email_template_bootstrap3bay9.pdfIn PDF document text
    • https://jubipolofolexi.weebly.com/uploads/1/3/2/3/132302872/sixegipovevubanuwo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373239/normal_5fca015e20472.pdfIn PDF document text
    • https://munejubulogulep.weebly.com/uploads/1/3/4/2/134266186/3992995.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/zuxime/not_meant_to_be.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/nepajedesimeweduraf.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_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 5624 bytes
SHA-256: e70326a69c4059e74e11622cb9fc85dbd1d601c3b809bcfc9fc0c125c49cd9a4
font_01_sfnt_off00010114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10114 10528 bytes
SHA-256: d6883bfc8a981bb4e769a5a027a4d3f8de8a1b395ea7acb26779416318461149

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