Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8c2983ba0f00df3…

MALICIOUS

PDF

72.9 KB Created: 2021-01-21 14:13:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a6943d2140887b8c1ed52594e1a2e90e SHA-1: e1d20c0c73f7cc7370c45c07b5dcaac9bd82fc93 SHA-256: f8c2983ba0f00df3f36a96ed2a0c68d9a573f1f212c82924ac348bf6cc6f2a88
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/wb?keyword=project%20manager%20roles%20and%20responsibilities%20resume PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402488/normal_5fd781cde26e0.pdfIn PDF document text
    • https://site-1175229.mozfiles.com/files/1175229/business_functional_requirements_document_template.pdfIn PDF document text
    • https://site-1195484.mozfiles.com/files/1195484/25033809699.pdfIn PDF document text
    • http://toteganutiv.66ghz.com/vebujirivalalazo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365594/normal_5fcbd7cd1876e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386605/normal_5fee7f340d122.pdfIn PDF document text
    • https://site-1083549.mozfiles.com/files/1083549/pilogunobevog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_5f99ade1423d3.pdfIn PDF document text
    • http://jenupekob.iblogger.org/gedifunojidu.pdfIn PDF document text
    • https://site-1178950.mozfiles.com/files/1178950/phonics_assessment_sheet_phase_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379035/normal_5fedba926e673.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vugikalijuboxo.epizy.com/26907275822.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/65626748183.pdfIn PDF document text
    • http://bilexijo.rf.gd/statutory_declaration_of_acknowledgement_of_parentage_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/citroen_c4_grand_picasso_manual_2008.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_off0000df35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF35 5608 bytes
SHA-256: 8ead0e394016a329cff19725877c018676f8edbe0dbaf58944cbda175d24e03f
font_01_sfnt_off0000f22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22B 10648 bytes
SHA-256: 4dfdb022d2fee78df500d1660c4b7a2cfbf625c77aef22e96c252908f179a59b