Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d715415241e792…

MALICIOUS

PDF

79.9 KB Created: 2021-11-01 18:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: 1d2e35747dd73cbb4ddf09fc6397a491 SHA-1: b727c543fce059c6b6689673d8bb4f67f489de74 SHA-256: b5d715415241e792b692e5d7229a4f9e234618331a4c5c0c1d709a1f2a03ac79
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 7

  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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 http://encino.kopanramen.com/uploads/files/92659551168.pdf In PDF document text
    • http://dae-young.kr/upload/fckeditor/file/nopodalamigetigo.pdfIn PDF document text
    • http://nebovsem.ru/app/webroot/files/files/65124284828.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/65505582343.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/24192970906.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/pe81o7p501o90c4kvvltpma3qk/pijesagupaximolojikawem.pdfIn PDF document text
    • https://clubberia.com/js/ckfinder/userfiles/files/vonisuxonifuniwo.pdfIn PDF document text
    • http://trongtinpc.com/luutru/files/pimefigabefe.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16170ccc70508b---87693117513.pdfIn PDF document text
    • https://comillaspostgrado.es/userfiles/file/21828621795.pdfIn PDF document text
    • http://canadianrockies.ca/files/file/64340621426.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/xapexugune.pdfIn PDF document text
    • https://mamalight.net/business_school/uploads/file/21559793211.pdfIn PDF document text
    • http://ambulatorioveterinariocigliano.com/userfiles/files/80495146156.pdfIn PDF document text
    • https://oreopay57.com/ckfinder/userfiles/files/xonaduninevisebivowovewa.pdfIn PDF document text
    • http://radecznica.pl/userfiles/file/49447167589.pdfIn PDF document text
    • http://membranekeyboard.de/_data/file/zafuxika.pdfIn PDF document text
    • https://kibledergisi.net/resimler/files/25942419173.pdfIn PDF document text
    • http://eventclub.pl/userfiles/file/48263445130.pdfIn PDF document text
    • http://designpavelzapletal.cz/files/file/79560110568.pdfIn PDF document text
    • http://hycxchina.com/filespath/files/20210902111655.pdfIn PDF document text
    • http://harnettcountyhba.com/userfiles/file/47722248363.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/TxADE9PCSUw/uplcv?utm_term=history+of+modern+india+notesPDF link annotation
    • 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 extracted file (font_00_sfnt_off0000d711.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d711.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD711 10572 bytes
SHA-256: a97bd3fc04d05645642cbbe117753c28499fc1f99d2f9419ffcbc8f7d10e3250
font_01_sfnt_off0000ef32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF32 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10744 16536 bytes
SHA-256: f04bdced6cf74500225cd17c811d94e33fd0f6a740bae0d263d736ecdd13b67d