Malicious PDF — malware analysis report

Static analysis result for SHA-256 191668e509a99f3f…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 12:12:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 1636588f4952c1135457c152f904490c SHA-1: cdbc2fc2ffd53fa8fa3794fac55729927d704dcf SHA-256: 191668e509a99f3f4f182e0344dafd9ae69cb613732e3935bebbc0ec50f78098
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=da+form+4126 PDF link annotation
    • https://tafanoxuxirugo.weebly.com/uploads/1/3/5/3/135327873/ab88400ed4863.pdfIn PDF document text
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/cc4352dd4b59e6.pdfIn PDF document text
    • http://wtia.space/abdullah_calan_kitaplarlxp45.pdfIn PDF document text
    • https://fojozotewimoko.weebly.com/uploads/1/3/5/3/135324817/fufovodovavizesozan.pdfIn PDF document text
    • http://teasmall.space/soccer_ball_bounce_back_net2jc5z.pdfIn PDF document text
    • http://kersita.space/schwinn_26_inches_womens_suburban_comfort_bike_bicycle_-_mintnnegg.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/sexitujabowujuk9c5x.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/zosozog_vadasesinasuve.pdfIn PDF document text
    • https://nugivukowunel.weebly.com/uploads/1/3/4/0/134041243/663b4db874.pdfIn PDF document text
    • http://homeolimp.com/76394751662m5w08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/4059790341.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/99330016217.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/bruegger_s_bagels_nutrition_information.pdfIn PDF document text
    • http://dasowarixolusix.rf.gd/47129113384.pdfIn PDF document text
    • http://fuluxewamotate.atwebpages.com/how_to_start_a_boiler_from_cold_condition.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_off0000dd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD99 5128 bytes
SHA-256: 2b5920a3701493024b3024d9ebad13f8365b24d5944cd334f45847ea7a6e848f
font_01_sfnt_off0000ef09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF09 10396 bytes
SHA-256: bb27c11736a78e45c05e3f9eb82c873bcee00d7531f71637833a8eb49367103d