Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd76c2c2f27a32a4…

MALICIOUS

PDF

78.0 KB Created: 2022-03-29 18:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 44e06d6982af0f97d7345200b87f5af0 SHA-1: 944cf02a08f4f77181f86133c6ea842146513ff0 SHA-256: cd76c2c2f27a32a4b7106ef664bc4f21b4bc431a648f9c4e5777d6c62ec1c7a2
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • 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://yoyep.co.za/YmrXLWy8?keyword=present%20perfect%20and%20present%20perfect%20continuous%20exercises%20pdf%20intermediate PDF link annotation
    • https://casaalu.com/luutru/files/57820907657.pdfIn PDF document text
    • https://muwamobole.weebly.com/uploads/1/3/4/3/134356931/a6d40f.pdfIn PDF document text
    • http://primewritings.grand-essays.com/media/uploads/files/88362056796.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620702cfd30c3---41636574640.pdfIn PDF document text
    • https://finliz.lt/i/File/fibozase.pdfIn PDF document text
    • https://wiercenie-studni24.pl/files/files/77877240879.pdfIn PDF document text
    • http://iphysiology.ru/upload/tunuv.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/livirisedatavot.pdfIn PDF document text
    • https://newsflash.asoex.cl/userfiles/file/74472115240.pdfIn PDF document text
    • https://www.hotelashray.in/kcfinder/upload/files/numulewijuzosaranafid.pdfIn PDF document text
    • http://eurosolar.cz/res/file/wuzogiwagirulipa.pdfIn PDF document text
    • http://studiomedicoveterinariobellucci.eu/userfiles/files/fipufow.pdfIn PDF document text
    • http://batteryzone.pk/assets/kcfinder/upload/files/71789130992.pdfIn PDF document text
    • https://uat-tunisia.com/userfiles/file/vibidufonuwutafa.pdfIn PDF document text
    • https://boxavaruju.weebly.com/uploads/1/3/4/7/134759985/ferape_kafawuvina.pdfIn PDF document text
    • https://casapenela.cgb.pt/admin/files/files/zaripevibevarejezemewe.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16238597821579---78181502289.pdfIn PDF document text
    • https://sysyanginguvenlik.com/uploads/files/gisitemusasaxegafo.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDDF 10940 bytes
SHA-256: f49c27209c523278ead0adf2b355cc672dfb4f01fa5ad48d5f56df56b86ed3f5
font_01_sfnt_off0000e740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE740 16916 bytes
SHA-256: 945c223cfc00d74ac9f96f29ba333ffb06b228f32ec743a4a1f1dd670c48f286
font_02_sfnt_off000112c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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