Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9d9cde033f5e4c…

MALICIOUS

PDF

71.5 KB Created: 2021-03-03 02:45:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0eadd66d12711bc3f4b95474f51a2543 SHA-1: 947f8989a20ce1c920e5c2674d4d6bfd190c96fd SHA-256: 5e9d9cde033f5e4c7a29727c54e28e1027ef99870e39f9451add1d8b6ab9ffb1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/award?keyword=diy+gun+cleaning+bench PDF link annotation
    • http://hamsterbig.com/bunupejot2kb.pdfIn PDF document text
    • https://xajekedifa.weebly.com/uploads/1/3/4/4/134469171/duwoluzib.pdfIn PDF document text
    • http://fuckfrsky.com/writing_a_friendly_letter_template_p8y7v2.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/quote_about_the_sun_rising_and_setting2krsv.pdfIn PDF document text
    • http://nekretnine.site/cochlear_nucleus_6_rechargeable_batteryaelzi.pdfIn PDF document text
    • https://tizelizenofus.weebly.com/uploads/1/3/0/7/130740364/1240685.pdfIn PDF document text
    • https://gotagifegu.weebly.com/uploads/1/3/1/6/131607164/zedalasafesi.pdfIn PDF document text
    • https://kexefofivib.weebly.com/uploads/1/3/5/3/135305266/8898343.pdfIn PDF document text
    • https://sinekamawo.weebly.com/uploads/1/3/0/7/130776883/9687652.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://besevinoferoza.epizy.com/10806879278.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/4287353260.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/tarugiju.pdfIn PDF document text
    • http://govanijadozeb.epizy.com/tabla_periodica_en_espaol_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/assent_form_requirements.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_off0000dd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD90 5028 bytes
SHA-256: 1741ca59008597576efb0f2e73927f7df1d4911214b1f283b27288248f9566e7
font_01_sfnt_off0000eec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC2 10168 bytes
SHA-256: 73c9eb2883f29d9345ac8c8f7e50d9d1ed460b35969a7fc23ec523b3977e9c28