Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b8fef6e9fc33ab…

MALICIOUS

PDF

114.1 KB Created: 2022-02-13 11:13:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-29
MD5: bc8020a215381826ed4a682c9bc5478b SHA-1: 0a83d51c942b07b94130d34b2176e95df2bb0912 SHA-256: 72b8fef6e9fc33ab812f74277053bd5b9de51f67e1cca630042f8e5d7955b5ed
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cafij.co.za/XSRYdR1H?utm_term=drawing+straight+line+graphs+tes+worksheet PDF link annotation
    • https://gyn-koe70.de/obrazky/file/nuxagidimidekozipe.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/86388985564.pdfIn PDF document text
    • http://vinhhangvien.com/upload/files/8328087108.pdfIn PDF document text
    • http://www.xtraordinaire.org/web/kcfinder/upload/files/zejokolugawomofudaguma.pdfIn PDF document text
    • http://phuocthuan.vn/images/pic/file/92165852438.pdfIn PDF document text
    • http://jzssf.com/upload/file/022220265186.pdfIn PDF document text
    • http://hyswimpool.com/userfiles/1809140831.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1617f71c7aebd1---68494416142.pdfIn PDF document text
    • http://inphilong.com/upload/files/74292529147.pdfIn PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/dexali.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610875a4457a6---89868876743.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/muxojipadimeraxolavi.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/44867445349.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9a676c1ac4---85915014866.pdfIn PDF document text
    • http://starcity-vinhomes.vn/app/webroot/img/files/50358404465.pdfIn PDF document text
    • https://nabijdefossa.nl/upload/files/zeweza.pdfIn PDF document text
    • http://kronikarp.pl/ckfinder/userfiles/files/susesapuwok.pdfIn PDF document text
    • http://delfosventures.com/userfiles/files/97662825426.pdfIn PDF document text
    • http://kurskodkb.ru/page_edit/_samples/userfiles/files/74126723280.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/3dd83c2353dd7acdf242c74ef0927a8a/44072152025.pdfIn PDF document text
    • http://numismatika-nbkpdy.cz/userfiles/file/71492549762.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000140a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140A5 19044 bytes
SHA-256: 81fb4942a65773c3c83ba1c132f39c8ca3a7f8a30c281ccf0f81735ff7cd4dac
font_01_sfnt_off000172f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x172F1 10708 bytes
SHA-256: ec2140fb893fb3a50ed320c96797717111d386b9c9e9d8127f5b594add31f7d7
font_02_sfnt_off00018b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B7F 16540 bytes
SHA-256: e8486dda68d8266c598e955260788762e21e39567fd64c38d8391f70685452e0
font_03_sfnt_off0001a2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2AA 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9