Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b79f1303293cd32…

MALICIOUS

PDF

69.0 KB Created: 2021-03-15 06:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d74f3b8dd0d23042557abed52f07ac12 SHA-1: 681a7e2557c3ffd6e18d1798fe53a10a284e8fa5 SHA-256: 6b79f1303293cd32dd07772fd61dfca9ba8aa7a00805f242b0ff38251984afd3
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://pelibifir.ru/wix?keyword=earthbound+game+guide+pdf PDF link annotation
    • http://puvepum.getenjoyment.net/sokisovakojapakozaviv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502268/normal_6006577a995aa.pdfIn PDF document text
    • http://nekidifuton.medianewsonline.com/list_of_unsaturated_fatty_acids.pdfIn PDF document text
    • http://ridaxaki.mywebcommunity.org/treatment_of_ischemic_heart_disease.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443799/normal_5fcc459e7c344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422163/normal_604dbd16d2d0c.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/ds-ga_1003_spring_2020.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/vejufuwito.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475194/normal_5fea386233d97.pdfIn PDF document text
    • http://zokupez.mygamesonline.org/neato_botvac_connected_parts_diagram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_5fdc4ddc823dc.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/vuzufexarevima/39143534146.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/kutanavalutibuviwuzowukuk.pdfIn PDF document text
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_cc6308e48f854273a9478dfd1edb46ac.pdf?index=trueIn PDF document text
    • https://9b704b87-3668-414c-a24e-b30400fe0e33.filesusr.com/ugd/51c472_9185dae4b1044b199d2694d9b19b5cdb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/putuximomuzarosebupigovi.pdfIn PDF document text
    • http://rususekobijo.myartsonline.com/pevirewutejo.pdfIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_28fc0a2856504d9cb84c6b43a6c88387.pdf?index=trueIn PDF document text
    • https://54e283d8-6946-47af-b6e3-c78582312647.filesusr.com/ugd/22cd47_39150df1483a4d079fdf9d4e69b50635.pdf?index=trueIn 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_off0000d29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29F 5340 bytes
SHA-256: 8bf77148b0cb116abbc6a4d4e1d19f72a021015e78475fc26f3816c67e6d1157
font_01_sfnt_off0000e4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A1 10072 bytes
SHA-256: 1e97dc9a360c56c381fc803402c26240af9529d7adb6c840c222873147f1e593

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