Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d91c7e7e9cb27b…

MALICIOUS

PDF

69.7 KB Created: 2021-03-03 06:22:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9aff8b77695cbe40fdeb42bb423dfc07 SHA-1: f5c2939c368a793d59a7dfae51a2dfcffe4a7bb3 SHA-256: e2d91c7e7e9cb27bb4a15de0e6640bda10bd9fec826fb07ecf0450dbd52ce35c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/award?keyword=the+wave+radio+station+delaware In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_6010c8d2e4481.pdfIn PDF document text
    • https://cdn.sqhk.co/koluvukirate/HPjghdR/81338547747.pdfIn PDF document text
    • http://vvd.bar/bezawogujapujixlvaaj.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/egjghio/11954970627.pdfIn PDF document text
    • https://cdn.sqhk.co/dopebuxoz/dVjajd9/57397763076.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/gadotobatupilupux.pdfIn PDF document text
    • http://wide-take.top/tovadasagagawexevobidgykm2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bibuligo.epizy.com/rupebanuxigejuv.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/general_physics_questions_in_hindi.pdfIn PDF document text
    • http://jigosip.epizy.com/bahubali_1_movie_tamil_songs_free.pdfIn PDF document text
    • http://wokupepafi.rf.gd/letter_of_resignation_template_no_notice_uk.pdfIn PDF document text
    • http://xizokokov.epizy.com/54603623634.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_off0000d6cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CD 5016 bytes
SHA-256: bc7c2739682e0efb08c93156a0fbeeb820aae478f7923ec4335c5f84cb9bcd25
font_01_sfnt_off0000e7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E6 10028 bytes
SHA-256: 23e991b6c2653d3b31984044f036290c8d05b037c89c37a027b7fde4f57b34ab