Malicious PDF — malware analysis report

Static analysis result for SHA-256 661d5e66246dc061…

MALICIOUS

PDF

73.8 KB Created: 2021-02-14 01:49:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 26b5076358dca45fb1076def3596d669 SHA-1: 4a7f10e31646138002e39d9160d6783f9db163fe SHA-256: 661d5e66246dc0616caf89671cd0d5da3ac07f3be5263ad8ed49df74e1128ed3
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/wb?keyword=basic%20html%20template%20without%20css PDF link annotation
    • http://pepojen.iblogger.org/crystal_reports_totext_leading_zero.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/ibiegjp/calories_potstickers_chicken.pdfIn PDF document text
    • http://ig-supportcenter.xyz/biotechnology_questions_and_answerssitoz.pdfIn PDF document text
    • https://cdn.sqhk.co/mogowepuw/dogiidx/73662215717.pdfIn PDF document text
    • http://yatvoyya.fun/comparer_des_nombres_cm1wsj0c.pdfIn PDF document text
    • http://komarovskii.xyz/smashing_4_tier_listhbble.pdfIn PDF document text
    • http://zanartcc.net/wajotase86g0c.pdfIn PDF document text
    • http://anyita.space/30248795966mgsc6.pdfIn PDF document text
    • http://classicalnaturally.com/radosedimowesobekavbgxh.pdfIn PDF document text
    • http://magic-world.site/eyewitness_report_formatg0id8.pdfIn PDF document text
    • http://abwaab.su/exercices_les_accents_en_franaisdw6x4.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/dobesogum/gitaxolotigit.pdfIn PDF document text
    • http://gidubivej.rf.gd/guided_meditation_to_manifest_abundance.pdfIn PDF document text
    • http://nufejubonuviwo.epizy.com/centrifugal_pump_design_tuzson.pdfIn PDF document text
    • http://bekapoza.epizy.com/zebumijopimopur.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/92738116450.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/dipivifu.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/chemistry_igcse_edexcel_book_answers.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_off0000e3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A3 5220 bytes
SHA-256: 151ab4ede39def6d9867bcec2fc2c26c9af0ef5ced2a7e5da2c342bb3a66a67a
font_01_sfnt_off0000f553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF553 11020 bytes
SHA-256: 7dee7d8dba357e9ced23731a1dbdc8082bb56d7fc660515511f3bfbbe1004564