Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad6cc4557c564152…

MALICIOUS

PDF

67.8 KB Created: 2021-02-17 08:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d49ac46863c37e40d479a202ed8a718a SHA-1: 82313dadcf220a790fe3a1fc9560e441f04d372b SHA-256: ad6cc4557c564152113d7a1762b6b923285588fed8ccda6b4893101bcb44ff8c
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=how%20many%20calories%20in%20a%20large%20iced%20coffee%20from%20dunkin%20donuts In PDF document text
    • https://cdn.sqhk.co/dibirolinu/chjiege/80014045051.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369508/normal_5ffe858870664.pdfIn PDF document text
    • https://cdn.sqhk.co/jabupexipa/jaEhbib/bukupizapi.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/Ekhegdw/cara_menggunakan_messenger_for_whatsapp_webapp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459625/normal_600b451178506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_60206ebda5717.pdfIn PDF document text
    • http://menesoger.iblogger.org/aib_food_defense_plan_template.pdfIn PDF document text
    • http://lagepukoz.22web.org/93410778438.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450247/normal_600517bd370f8.pdfIn PDF document text
    • https://cdn.sqhk.co/lepowabog/UbrhbAg/chocolate_castle_cake_decorating.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476580/normal_5fd3888d83b81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_60199bb0f3dd2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimakadube.epizy.com/pestle_analysis_templates_free.pdfIn PDF document text
    • http://zapofekeba.rf.gd/43436903037.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/autocad_autolisp_developer_s_guide.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_off0000cafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFE 5560 bytes
SHA-256: cffb929c02d713b25762a056df56e1b641fb57d7cbf02c50f2395789345294d2
font_01_sfnt_off0000dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE7 10492 bytes
SHA-256: e1c84a9956185107316435d4d8c124959a3fd57992783d991f81c7d982bface5