Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ce8e80533cf02c…

MALICIOUS

PDF

77.2 KB Created: 2021-02-10 01:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dcf25c43e871230b5007c7d7558a8ab2 SHA-1: 5f348ea1949d8abc7cb4ac7b237f3308eedfdfcb SHA-256: 38ce8e80533cf02c7492f570a33381652eeb7486fc88b80026bce2a4b6d0c7b4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/wb?keyword=nucleophilic%20addition%20reaction%20pdf PDF link annotation
    • http://azorocheat5.xyz/bernardo_p_kster_formao4li2r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5fc5c97e45c1f.pdfIn PDF document text
    • https://cdn.sqhk.co/xigofidiw/ghZ16PP/1652128712.pdfIn PDF document text
    • http://raifaisentapp.online/period_exclamation_point_question_mark_worksheettfkea.pdfIn PDF document text
    • http://gaxotewaboka.iblogger.org/blend_mu_lightroom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_601ec986b3a02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417140/normal_600b383702686.pdfIn PDF document text
    • http://naturmilans.fun/acopermnt_maicii_domnului_acatisttpxcq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387589/normal_5fd03cd190d8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389095/normal_60183caf2cb34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459941/normal_6007f6bbe0ae0.pdfIn PDF document text
    • http://itrom.fun/akbarnama_in_banglaagqy8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495269/normal_5fe199e267811.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/kibavutibeved/chemical_equilibrium_class_11.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/90524116306.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/phpspreadsheet_reader_close.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/biology_for_upsc.pdfIn PDF document text
    • http://nazonuretowu.epizy.com/isilon_x400_spec_sheet.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_off0000ed7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7B 5036 bytes
SHA-256: 3bb24259f0b8b15757307b57d9b09fc6aee2231cd321f94b1ebbb64a33b62f90
font_01_sfnt_off0000fe9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9D 12672 bytes
SHA-256: c549e5e4006829ca963c09733ed0bcbbf088a0141b722e8e56136ee50cf580f3