Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8bbe0f1adcf9de…

MALICIOUS

PDF

70.9 KB Created: 2021-09-20 06:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: bcf935cd3a061175ea3dc7a60c7e7212 SHA-1: 24f4af744b6fd389d2cf6240f54a1223845e0716 SHA-256: 5d8bbe0f1adcf9de2f7e8b5519f785240095cee8297f56bf3075fc112bdf3721
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 5

  • 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.
  • 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://quanhoangtsi.com/upload/quangtri/files/53066923847.pdf In PDF document text
    • http://ng-sons.com/userfiles/file/13803728024.pdfIn PDF document text
    • https://inprovitcaribe.com/ckfinder/userfiles/files/24523916464.pdfIn PDF document text
    • http://zjleiou.com/images/upload/File/fuzobi.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/5f5b1f085bfb3425517f0ad557682773/gurumapezobejanulojedosu.pdfIn PDF document text
    • https://mpksieradz.pl/upload/file/89505188830.pdfIn PDF document text
    • http://saatgaamkansarasamaj.com/admin/uploads/files/13836366814.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/nemove.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/20124648942.pdfIn PDF document text
    • http://studiogallerani.it/userfiles/files/wukufagarofufawu.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/98643707692.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/66175252331.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/15994446846.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/zulidaripawovoxaponoxosi.pdfIn PDF document text
    • https://speedwayinfo.hu/uploads/file/93003590162.pdfIn PDF document text
    • http://safarekhoob.ir/basefile/safarekhoobir/files/69634462742.pdfIn PDF document text
    • https://tasteadmin.com/ckfinder/core/connector/php/custom/wysi_uploads/files/vikulijokal.pdfIn PDF document text
    • http://xn--12cxa2boh7cd6g7anex5omh.com/ckfinder/images/files/vuvutugidipujuga.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c51187a30---baren.pdfIn PDF document text
    • https://adtw1.com/ckfinder/userfiles/files/fodawebejisaxuxifojafejo.pdfIn PDF document text
    • https://eprobatdz.com/ckfinder/userfiles/files/26627912730.pdfIn PDF document text
    • http://stonebreaker.at/tomovo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=windows+10+still+freePDF 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_off0000b975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB975 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD18C 10440 bytes
SHA-256: a0666d4f8ab44d285fad9dbe980b711ae6c7f5024c718fb90583750b7567dd4e
font_02_sfnt_off0000e966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE966 14656 bytes
SHA-256: df8cc6830c77229e4ef6353ab2d5e0f7a78c422efb2697a119acb79c5fff36c6

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