Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1ac529802ffa5c…

MALICIOUS

PDF

74.3 KB Created: 2021-02-26 07:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 418feeb615ff1090127127ab20ae5348 SHA-1: 6c4a0887c062409d7d76b234dda9a434b9896eb7 SHA-256: cd1ac529802ffa5cdd26d59175555a6155aae363b73935719bfcc3b9c03f8ecb
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/award?keyword=eyelash+extensions+certification+near+me PDF link annotation
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/cec73.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/94494080905.pdfIn PDF document text
    • http://retamos.mygamesonline.org/samsung_smt-i6021_factory_reset.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493198/normal_600b3bd7436d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412895/normal_60377fc71a249.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/gdhigjq/project_management_software_reviews_2019.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/austroflamm_integra_2_pellet_stove.pdfIn PDF document text
    • https://vekerarefatada.weebly.com/uploads/1/3/4/8/134868636/fuzunexejatezumebu.pdfIn PDF document text
    • https://cdn.sqhk.co/seruribemoju/gdqG4jb/city_car_driving_simulator_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368218/normal_5fefe5e7f3a5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480904/normal_5feb8142b2fcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_5fea311c2d2ca.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/jTbQMjb/american_euro_truck_simulator_2_download_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kapirexazi.onlinewebshop.net/zobizunaja.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/lodge_enameled_cast_iron_dutch_oven_recipes.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_off0000e466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE466 5248 bytes
SHA-256: d084c86b2dc57a898d1a12d03e1ac105dfdcc8817fdcd6388d61012e1b357bf3
font_01_sfnt_off0000f625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF625 11204 bytes
SHA-256: 4a31223a3976e09f7836424172f654b48c8dde4297b986b036b8314cd47d5437