Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c1b9eb7faba600…

MALICIOUS

PDF

69.2 KB Created: 2021-02-19 06:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 249f471023c2e005829515a384e8f086 SHA-1: af4e7c30fc87118663263ff2031ba6be925bc7fd SHA-256: 09c1b9eb7faba600b0a3ddca1b4b9d27fa60053bc6f95be0e75a0e0ee9738830
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, directing users to numerous external websites, many of which are hosted on disposable domains. The primary URL suggests a phishing or scam attempt related to water heater installation costs. The presence of ML and ClamAV detections indicates a high likelihood of malicious intent, likely to lead users to phishing sites or download further malware.

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://jacksth.ru/strik?utm_term=rheem+tankless+water+heater+installation+cost PDF link annotation
    • https://tonudekosinin.weebly.com/uploads/1/3/4/6/134685286/6386670.pdfIn PDF document text
    • https://cdn.sqhk.co/zupololano/l5nie53/6952315591.pdfIn PDF document text
    • http://bamovewube.22web.org/dvc6200_quick_start_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/dgdgjx3/geography_and_environmental_studies_degree_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/lewonuvaxu/hiQeKhd/xobulakepafivifumopeto.pdfIn PDF document text
    • http://smirno.life/xuxadujqgsrf.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/jdgcehb/bad_banks_season_2_episode_6.pdfIn PDF document text
    • http://fresh-ita.fun/dance_classes_for_toddlers_in_chicagolfzwz.pdfIn PDF document text
    • http://iwhite.space/hp_smart_app_fur_macbook0nlzz.pdfIn PDF document text
    • https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/bubumuxareripowerox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://notalopelovawu.epizy.com/monthly_office_expenses_sheet.pdfIn PDF document text
    • http://vudolazer.rf.gd/21486822554.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_off0000d2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A8 5200 bytes
SHA-256: 7ff4056ed7988fc11fc4df57c47513eded248f03defc3094625f19c334417816
font_01_sfnt_off0000e43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43D 10420 bytes
SHA-256: 45fa55dae282bcf48b789c741dce75a5511ede5ad3fced45b96bf752b2b1246c

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