Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94399bb5fb8bd32…

MALICIOUS

PDF

75.6 KB Created: 2021-02-07 23:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 53ccc04b59d80935519909bbbf98b240 SHA-1: 5c09ae8f976082ebc2702cf7d6c7fefdf810d80f SHA-256: c94399bb5fb8bd32e89c04979c27a47f2138356a76bc151743f2831462d3970d
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://jacksth.ru/aws?utm_term=police+report+lookup+indiana PDF link annotation
    • https://cdn.sqhk.co/gomiwopizi/NjnJigh/49912753994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463533/normal_5fe9c48402213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473062/normal_601677d9c802f.pdfIn PDF document text
    • http://domavera.ru/47445855307ty065.pdfIn PDF document text
    • http://vapurese.22web.org/bootstrap_4_admin_template_bootsnipp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447466/normal_6008fdeae2d6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482863/normal_5fee1de7f22c7.pdfIn PDF document text
    • http://wugafis.66ghz.com/38821979273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459624/normal_601d19baa143f.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/mV3ChgY/83829957498.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dozesika.epizy.com/fun_halloween_math_worksheets_for_1st_grade.pdfIn PDF document text
    • http://nikuzemadol.rf.gd/fmovies_apk_latest_version.pdfIn PDF document text
    • http://fekobovovexi.epizy.com/sejemozalagega.pdfIn PDF document text
    • http://digaruwuw.rf.gd/buyers_guide_apple_watch.pdfIn PDF document text
    • http://duletufazipup.epizy.com/98549092191.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_off0000ec56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC56 4952 bytes
SHA-256: 73cfaa084f7070db1693c5f667d4c76b7c130500a42099d509ddaf6fc48846cc
font_01_sfnt_off0000fd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3C 10720 bytes
SHA-256: f9aa399023bfd8206133e0bad8b5bed61ec554db76b30a42084fa975ebaaecde