Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e984f1a91bfa2a…

MALICIOUS

PDF

72.6 KB Created: 2021-02-26 04:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c6bd5679f107ea8e8afc38d1e7e77fe9 SHA-1: 5b21426f24c01fc484b626c0055349ff75fa6a6e SHA-256: b1e984f1a91bfa2a655493f552997cfd6648a009dd85755f914b4b76460d3ef4
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/award?keyword=how+to+connect+garmin+forerunner+620+to+wifi In PDF document text
    • https://cdn-cms.f-static.net/uploads/4488569/normal_600ff976399ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fc6904439122.pdfIn PDF document text
    • http://vigastlens.xyz/adilakshmi_purana_kannada_movie_songs2ehiz.pdfIn PDF document text
    • http://kraftmann.su/tippmann_a5_upgrade_barrelpn3ry.pdfIn PDF document text
    • http://furniture21.online/is_there_going_to_be_a_new_harry_potter_booky1orz.pdfIn PDF document text
    • http://dk-inc.xyz/how_to_reset_my_fios_voice_remote8tzxs.pdfIn PDF document text
    • http://apsmall.space/bebiji4rd0.pdfIn PDF document text
    • http://amsidgi.xyz/the_bully_bookqlgc4.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/how_to_defrost_samsung_ice_master.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/27384944952.pdfIn PDF document text
    • https://xateboduf.weebly.com/uploads/1/3/1/4/131483383/xigan.pdfIn PDF document text
    • https://lubikumak.weebly.com/uploads/1/3/1/4/131453733/3854489.pdfIn PDF document text
    • http://5gusevshop.space/togiwol4mhqn.pdfIn PDF document text
    • http://rekusigixebisuk.22web.org/fabedifupobatofugejeluta.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/mowinobewojatowu.pdfIn PDF document text
    • http://lady-bug.club/432848431382vw7q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rozopujonabesix.epizy.com/blokus_duo_rules.pdfIn PDF document text
    • http://gafiruxosu.rf.gd/dixokivowegikatej.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_off0000def6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF6 5472 bytes
SHA-256: 2e64ecac6f5d2c18d503939c158fbdc4d3aeb2cfccc42a23b5ed89dd9e69af3e
font_01_sfnt_off0000f197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF197 10460 bytes
SHA-256: 21f4e271808c33ed0b3c888d4e8e2606dbbf3da03c9b4525973de46c5e779719