Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b81a633a1a24a6…

MALICIOUS

PDF

139.6 KB Created: 2021-11-30 22:53:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 6b4bc41a4187066879f9d4f84b69ce0a SHA-1: 38e74e60edcbc3d160c3ee4e43142756c91989ba SHA-256: 72b81a633a1a24a62d3ae6b3963fb89d7e7e4ffc46115a2e9ceb80ff20519e15
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9567

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://laborke.ru/uplcv?utm_term=baba+banda+singh+bahadur+history+in+punjabi+language+pdf PDF link annotation
    • https://huaienclinic.com/uploadpic/files/51264007623.pdfIn PDF document text
    • http://mecateengenharia.com.br/ckfinder/userfiles/files/71259605614.pdfIn PDF document text
    • http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/guvuwizasikinewumomeduwi.pdfIn PDF document text
    • http://denkobarbell.com/_upload/files/18050861856.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.com/ckfinder/userfiles/files/zovenigalisivadudapor.pdfIn PDF document text
    • http://yuanjen.com/ckfinder/userfiles/files/zufuninafik.pdfIn PDF document text
    • http://ridendo.cz/files/file/dutugajedugabopan.pdfIn PDF document text
    • https://enilubricantvn.hoakhanh.vn/uploads/image/files/rawero.pdfIn PDF document text
    • https://santa.my/images/users/00000000/files/befiluparujunudovu.pdfIn PDF document text
    • http://nataliashishkina.com/userfiles/file/ligepele.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/37794344503.pdfIn PDF document text
    • http://khautrangkhangviet.com/upload/img/files/16925107999.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/34763910915.pdfIn PDF document text
    • http://jimsclub.net/new/board/img_tinfo/file/20210929004858.pdfIn PDF document text
    • http://asztalosweb.hu/userfiles/file/jekugomigog.pdfIn PDF document text
    • http://busangh.com/attfile/fckimg/file///2021112023056_125091250.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16169a7b718caf---31041849408.pdfIn PDF document text
    • http://giorgimpianti.com/userfiles/file/tidupi.pdfIn PDF document text
    • https://igk-lilienthal.de/downloads/kirugajujana.pdfIn PDF document text
    • http://eros-arena.de/eros/userfiles/file/84222303326.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143e7ef390e5---duwuzojikosurimuvokatov.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/forudolejepipojetu.pdfIn PDF document text
    • http://bonaparte-kerkrade.nl/fckeditor/ckfinder/userfiles/file/jupiwuxedabasolafevizemaj.pdfIn PDF document text
    • http://www.leasebridge.com/CKUPimg/files/53420843223.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_off0001c36c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C36C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0001da0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA0B 16508 bytes
SHA-256: 1827355f602bc2d9c1e860a4fddbb71ac3744f7db73715beecdfa4a25c6831db
font_02_sfnt_off000204dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x204DC 11312 bytes
SHA-256: cb7a5836e2b738157e135a4ef61593f8e17d7ba673021580a8209aeaec66424d

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