Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3f82e99df579b9…

MALICIOUS

PDF

84.6 KB Created: 2021-08-16 02:26:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 69f1309fe0195354efefb2b9df1e6a99 SHA-1: 66f58893f80d9ce011d7ccf8a8c50f702ce8bc00 SHA-256: 4e3f82e99df579b9ce1b87a77caf29b87fd1b4b2d69010fed3e621957f760a77
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://chcial.ru/uplcv?utm_term=lenovo+ideapad+110+touchpad+driver+windows+7+64+bit PDF link annotation
    • https://colakcivi.com/userfiles/file/80985481593.pdfIn PDF document text
    • https://batdongsandothanh.vn/luutru/files/pediwed.pdfIn PDF document text
    • http://hzjksj.com/images/upload/File/84486297413.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/15179251396.pdfIn PDF document text
    • http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/fifeguwotoko.pdfIn PDF document text
    • http://arabic.cz/ckfinder/userfiles/files/ranokak.pdfIn PDF document text
    • http://gourmethousemacau.com/UploadFilesfile///bakavutuxoj.pdfIn PDF document text
    • http://japanbizkorea.com/userData/ebizro_board/file/wobatuvamajomenelelul.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c158ea24400---vabizovajagewavodewem.pdfIn PDF document text
    • http://keramann.ru/uploads/files/mizefiduroju.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/28e1c6e05e4d3156f72ea9be17fbc246/20360942253.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/23c4381da7123cf1ae1ec41c72650f67/14153641397.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fade6517e8---47371660774.pdfIn PDF document text
    • http://www.klccpa.com/userfiles/file/In PDF document text
    • http://lamachine.nl/userfiles/file/zapij.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bf426ccb41f---bofumibawafakokarozilipiw.pdfIn PDF document text
    • https://beruanglucu.com/contents//files/59288759949.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16096b1d21bc57---milug.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baafe90c15d---dibuliwizitipikopinewe.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/8056253882.pdfIn PDF document text
    • http://cadelupo.it/userfiles/files/pitov.pdfIn PDF document text
    • http://instandee.com/Images_upload/files/76407359225.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/kb40827493utaqt88rva1ojrin/68414623585.pdfIn PDF document text
    • http://matsonconstruction.net/userfiles/file/koterezikudobapivexe.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_off0000dbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEF 20072 bytes
SHA-256: ccacd3a932d0af38fbc7fd2ac31a14903b7a294eb57b986fdd7d281d8ce5d15a
font_01_sfnt_off00010f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F59 11384 bytes
SHA-256: 0de3033cdc95e83b25183af15584e937ee34413e403c27946e3b448b9911f06b
font_02_sfnt_off00012a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1