Malicious PDF — malware analysis report

Static analysis result for SHA-256 425de9084f386384…

MALICIOUS

PDF

79.9 KB Created: 2021-11-09 18:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 3fec97d2a8176800ff34523496c7f219 SHA-1: 7b79ff2e0da43b6b3958bcf06d27935f06e6aa24 SHA-256: 425de9084f38638460803b6b3c1adbb628939889dfc560ebae74a8b6adc17b03
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to a link farm hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or redirecting users to malicious sites. The presence of embedded JavaScript suggests an attempt to execute code within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://xylemleads.com/userfiles/file/pigajiko.pdf In PDF document text
    • http://drironcat.com/images/file/3908402992.pdfIn PDF document text
    • http://csc-tp.com/userfiles/file/20211029180814_44rslh.pdfIn PDF document text
    • https://clumba-indoor.ru/files/files/5310772974.pdfIn PDF document text
    • https://marlin-aquarium.ru/ckfinder/userfiles/files/96074152563.pdfIn PDF document text
    • http://global-leasing-management.com/uf/file/92511143974.pdfIn PDF document text
    • http://lulanjina.net/upload/files/jadex.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/girexaso.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614704a3ca59d---sukuremas.pdfIn PDF document text
    • http://boracayg.com/FileData/ckfinder/files/20211029_872CC415EDE1B198.pdfIn PDF document text
    • http://mediasingrid.com/js/new/fckeditor/userfiles/file/85090834501.pdfIn PDF document text
    • http://asv-solnice.cz/_files/file/fitufilojel.pdfIn PDF document text
    • http://cesnek-vysocina.cz/UserFiles/File/rezagelipizazajuteber.pdfIn PDF document text
    • http://brilsports.ro/userfiles/file///tinivonewoxujenamozowo.pdfIn PDF document text
    • https://nestsearch.in/admin/uploads/file/86195319164.pdfIn PDF document text
    • http://myrbacken.se/login/ckfinder/userfiles/files/rokareno.pdfIn PDF document text
    • https://gifarlcm.com/upfiles/editor/files/kesiza.pdfIn PDF document text
    • http://advocaatindex.nl/images/uploads/51007213896.pdfIn PDF document text
    • http://budget-pl.com/ckfinder/userfiles/files/82446434785.pdfIn PDF document text
    • http://ambvetesopo.eu/userfiles/files/sisurinasejetogivese.pdfIn PDF document text
    • https://locoffice.ru/userfiles/file/zivodovezovosipux.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/46571125697.pdfIn PDF document text
    • https://tenekedjieva.com/uploads/file/balivemitufuwezekot.pdfIn PDF document text
    • http://sb555.com/photo/file/13570809886.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/896FEnmJZlk/uplcv?utm_term=class+10+chapter+acid+base+and+saltPDF 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 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_off0000d090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD090 10836 bytes
SHA-256: 69345d151e59d4f7c6940e1fce33dde9e49364d4080f31eb14e0d2b2e56afe8f
font_01_sfnt_off0000e951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE951 18772 bytes
SHA-256: dd28de85c47abd8aee089956ae62282a364329e19f7926f38610b3448caa606c
font_02_sfnt_off00011ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD1 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef

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