Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa81ffe83995847b…

MALICIOUS

PDF

68.3 KB Created: 2021-09-26 14:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: b0b373cf7c5bd4c4b877a726b9a018dd SHA-1: fa13b51ad49896fe715b4744bda4909795f70b55 SHA-256: aa81ffe83995847b7f186e0394cb91507ef16d829d930a3b5cf605cdf08a2420
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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 https://inwebjor.ru/uplcv?utm_term=android+canvas+animation PDF link annotation
    • http://aburobocon2019.mnb.mn/uploads/files/gibobonukaz.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/guwegujitopexatosu.pdfIn PDF document text
    • http://knipia.com/userfiles/file/walanotiw.pdfIn PDF document text
    • http://pathtojanna.com/userfiles/files/80336401732.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/xefefefulaxedulexa.pdfIn PDF document text
    • http://rentator.com/uploades/fckeditorfile/43282697452.pdfIn PDF document text
    • https://zagorjeadventureteam.hr/files/8264619098.pdfIn PDF document text
    • https://amt-alarmy.pl/userfiles/file/98013174137.pdfIn PDF document text
    • http://karat-dobremiasto.pl/userfiles/file/jewuxaborumekanazofagumuj.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/41961817761.pdfIn PDF document text
    • http://debandhelder.nl/ckfinder/userfiles/files/11877450198.pdfIn PDF document text
    • https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/9407161.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/82433578565.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/leduputidubovale.pdfIn PDF document text
    • http://aa-nusd.jp/vuseg.pdfIn PDF document text
    • https://thuhuonglacquer.com/uploads/news_file/gepiguzavovanatumiz.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/6212701791.pdfIn PDF document text
    • http://evolution-dev.com/file_media/file_image/file/wufusu.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a2cd48ff6f---fifuk.pdfIn PDF document text
    • http://bobmeetin.com/media/galleries/files/47990052426.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/71345371704.pdfIn PDF document text
    • https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/84532144273.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143c992e4913---68104160400.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_off0000adf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADF3 15216 bytes
SHA-256: 2eeacd5922e6ff084d0ccaeda3caa4fc9f6978c9799a50b3e0942ae7294a36c4
font_01_sfnt_off0000d485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD485 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9C 10400 bytes
SHA-256: 4182fc0bfdf137187b6c1fedc98197aba2a022bdcba0d8025ed0a03455826239

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