Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73304fe0bc1f1ae…

MALICIOUS

PDF

72.5 KB Created: 2021-03-01 13:34:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4db3faf7b0d560c2fff94df83b7fded2 SHA-1: e1a3017cb24e1ebffe9383bfe2a49951d8513305 SHA-256: e73304fe0bc1f1ae628c9cd2be237f89c476c3786de924497df8964fd7dff438
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://resalured.ru/award?keyword=why+is+my+kenmore+washer+not+turning+on PDF link annotation
    • https://silajawa.weebly.com/uploads/1/3/4/3/134339193/rujinopibabakav-gegugenufaze.pdfIn PDF document text
    • https://gidorimafemona.weebly.com/uploads/1/3/4/8/134867851/93b94281f8359fd.pdfIn PDF document text
    • https://zogudoweno.weebly.com/uploads/1/3/1/6/131637773/5893984.pdfIn PDF document text
    • https://cdn.sqhk.co/piwoputi/hjFsiaB/65280649015.pdfIn PDF document text
    • https://dodapoxole.weebly.com/uploads/1/3/1/3/131398067/gaxilufo_sefudavoz.pdfIn PDF document text
    • https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/zaged.pdfIn PDF document text
    • http://zizovoduberi.iblogger.org/how_to_watch_the_handmaids_tale_without_hulu.pdfIn PDF document text
    • https://tupobufilu.weebly.com/uploads/1/3/5/3/135310482/3907b2bb1459.pdfIn PDF document text
    • http://ketokod.iblogger.org/monthly_financial_report_template_powerpoint_presentation.pdfIn PDF document text
    • http://maleev.online/kindle_fire_hd_7_4th_generation_case_ukybr29.pdfIn PDF document text
    • https://cdn.sqhk.co/wokinuge/gdjhhih/38216118439.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495994/normal_5ff18ff01fc88.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rovalonawu.epizy.com/the_stories_julian_tells_read_online.pdfIn PDF document text
    • http://kidinefa.rf.gd/invisible_influence_quotes.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_off0000de76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE76 5336 bytes
SHA-256: ea00b38316d961de4682a1ca8db8db9e2029c1b3b511ef1c0a431fa3936c7435
font_01_sfnt_off0000f096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF096 10688 bytes
SHA-256: 2e5b624ee4cc045d50d849eddd6afa4f337fd61687f4f89a9ebfe573b76908c8