Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd8b1c75db5287a…

MALICIOUS

PDF

74.1 KB Created: 2021-09-01 05:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 4bd54fb6cbf45a7aaca65f06dc7707a7 SHA-1: 6210643497adf19b7d553097f25b4bf8cbb28dc0 SHA-256: 3dd8b1c75db5287aeeeecdc62dbbe79e67039671542e59e8981d420e90df8b66
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bda511c5f11---motamob.pdf In PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1ee446ac0---durutavaretopujowekejuta.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/rigm2m5ergdhlqkepsub2knp47/lubodorofisutiripurageme.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/52878771688.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/5319056970.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/bajegevug.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4110a7e224---zegavud.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/14177008663.pdfIn PDF document text
    • http://investin-khj.ir/ckfinder/userfiles/files/1571610856.pdfIn PDF document text
    • http://chanakol.com/ckfinder/userfiles/files/99099023065.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/lomaxuwidovijob.pdfIn PDF document text
    • http://godswaynehemiahmbc.com/clients/878002/File/malifowenavifewowav.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607535687226c---80476141476.pdfIn PDF document text
    • http://medeeatour.ro/mm/file/72374412025.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160e686ad8e1cb---88552640782.pdfIn PDF document text
    • http://vizugy.hu/uploads/files/sivebedabubalovisu.pdfIn PDF document text
    • http://dallapietamarchisio.it/userfiles/files/53974026486.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/duperilixutoxeguz.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/83458089457.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092679e72c5d---38510143585.pdfIn PDF document text
    • http://hsi-international.com/ckfinder/userfiles/files/12540415179.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/25546689241.pdfIn PDF document text
    • http://remproekt-m.ru/admin/ckfinder/userfiles/files/roxomitejuzaxukijirivur.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=average+broad+jump+for+16+year+oldPDF 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_off0000bcbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCBF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D6 11132 bytes
SHA-256: e41f227f789543f7b745f61314d2ad69c9cfde0b9bee0d3ad6d0143ba307b2a8
font_02_sfnt_off0000ee88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE88 17380 bytes
SHA-256: 6c67722c6bac1204a1b77e7fcfa8339ecfe8f3959eb8d49342859c4cec7efa6c