Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd4a057aaa6c1b1…

MALICIOUS

PDF

71.5 KB Created: 2021-02-14 04:38:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a90e7baad5dc5538bfcc3e135194617a SHA-1: fca0cf627bad1daf23c35e340375aaa05f8931b4 SHA-256: dcd4a057aaa6c1b1f2632a6832e95168b45e43afcc19f5cefacb4501404b7b82
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://maypoin.ru/wix?keyword=batman+vampire+villain PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393624/normal_601b85fd9d0f1.pdfIn PDF document text
    • http://imm-shoes2.club/nisozisawokudifst0p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414677/normal_60102ef674adb.pdfIn PDF document text
    • http://world-wildshop.com/17466436479pf3gq.pdfIn PDF document text
    • http://miiliioner.xyz/adjoint_technique_de_recherche_et_de_formationrgwqj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453909/normal_60248557cb2e5.pdfIn PDF document text
    • http://sayfelengs.space/zafipamuzarixuxukajejire5195.pdfIn PDF document text
    • http://899themes-demo.ru/kathi_mela_kathi_song_in_isaimininela4.pdfIn PDF document text
    • http://yandex-dostav.ru/manual_de_acreditao_hospitalar_onal9v8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450730/normal_601bf907483a4.pdfIn PDF document text
    • http://smartycredit.info/58200688101rne7y.pdfIn PDF document text
    • http://menbp.online/kabel_charger_terbaik_androidz40df.pdfIn PDF document text
    • http://tixshopclub.space/supplement_facts_template_illustratorczqlo.pdfIn PDF document text
    • http://return-0.com/pathfinder_kingmaker_best_vivisectionist_build1ljpl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF88 4572 bytes
SHA-256: 57d78cc38fee6c12a591e473b75b2677677ee5f1e0bd226fae4c4ee83251a36e
font_01_sfnt_off0000dee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE7 10644 bytes
SHA-256: ea1403a1619a1751a177673a874cdc1e8d8a096e41562c90db8ce9fba96fd176
font_02_sfnt_off00010345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10345 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333