Malicious PDF — malware analysis report

Static analysis result for SHA-256 b456b5443bb2d620…

MALICIOUS

PDF

64.2 KB Created: 2021-02-17 10:50:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2e850560bd37fd43e3bb53306c67022f SHA-1: 9f60a5806eefce740f1524ef6367fbcd14c5f444 SHA-256: b456b5443bb2d62038b93ba6aa522d317084605c3145765df896ba3ac91c8ffb
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://baarspo.ru/wix?keyword=small+2020+calendar+printable PDF link annotation
    • http://titanof-filtr.ru/kitexitapadx58w3.pdfIn PDF document text
    • http://6gusevshop.website/accident_reporting_center_windsor_ontarioi8c8q.pdfIn PDF document text
    • http://cparta.moscow/bakery_business_plansrwo0m.pdfIn PDF document text
    • http://msertis.xyz/26635411808l5qn5.pdfIn PDF document text
    • http://teksalle.xyz/297254353279ygok.pdfIn PDF document text
    • https://rosunitekuw.weebly.com/uploads/1/3/1/3/131384708/e2d652d.pdfIn PDF document text
    • http://ryduslim.website/25643458495jqzi3.pdfIn PDF document text
    • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/fa6b64f2892e.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/IQiersH/the_term_that_literally_means_against_putrefaction_is.pdfIn PDF document text
    • https://javemutamutog.weebly.com/uploads/1/3/4/6/134638327/bizadanuxixiwituvab.pdfIn PDF document text
    • http://sexesex.site/chinese_national_anthem_songdcm6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000be97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE97 5560 bytes
SHA-256: fb19f110e76d990954fd265f30f0e7a9fa9233c22b3f49802bf7283d87555aa9
font_01_sfnt_off0000d150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD150 10208 bytes
SHA-256: 7fa605ac010d68abc143a055037bda82ef58fbfa95fa60460ffec67851520541