Malicious PDF — malware analysis report

Static analysis result for SHA-256 425cdcd37f85d2c0…

MALICIOUS

PDF

70.3 KB Created: 2021-09-29 06:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: bd01b6ed0c31badddef5bb7f043d36b6 SHA-1: 916ad23bde1e7e89db516d790a846748d8886f68 SHA-256: 425cdcd37f85d2c0c39ca68b961cee039b6540ac26ea78640c2e3b9fccc35a0b
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/c0c38149e4779b3cd7bd24c86b47b0ff/1262212022.pdf In PDF document text
    • http://melodylavernebettencourt.com/media/file/56747985298.pdfIn PDF document text
    • http://modelseafarm.com/kweb/ckfinder/userfiles/files/76307093246.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/nuwadidubulawam.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141a84b7a8c4---63256014026.pdfIn PDF document text
    • https://airbays.com/userfiles/file/tematimotinemugaso.pdfIn PDF document text
    • https://villamishkan.com/310renonew/front/images/files/35491877892.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e5178b9e57---givumejisavugifidasolozul.pdfIn PDF document text
    • https://rwd.webseo.tw/upload/files/xirapavixabukepijimazawo.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/50285268222.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/wumujosozoxiwebudisubuk.pdfIn PDF document text
    • http://namngonviet.com/user-/files/2060868438.pdfIn PDF document text
    • http://www.sudeshnamaulik.com/fckimages/file/89347225463.pdfIn PDF document text
    • https://buffinvestment.com/upload/ckfinder/files/62108043639.pdfIn PDF document text
    • https://carolinevlieghe.fr/images/file/54617122901.pdfIn PDF document text
    • http://pokewaveanaheim.com/uploads/files/baserokorenet.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143d70013fc9---fudakovunuz.pdfIn PDF document text
    • https://ph789.com/pinhsuan/files/file/poruxupawutexunulepogi.pdfIn PDF document text
    • https://ebal.ro/app/webroot/files/userfiles/files/11147072149.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16142d9b92329c---filuruwiwivajom.pdfIn PDF document text
    • http://gibkrakow.pl/uploads/files/71299454912.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/nixoridevolu.pdfIn PDF document text
    • https://serwisnawigacji.pl/userfiles/file/bifulosofumoxagasilov.pdfIn PDF document text
    • https://www.pension-chevaux-haras-gabereau.fr/ckfinder/userfiles/files/teximalifopunob.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=mp4+video+songs+download+onlinePDF 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_off0000b429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB429 15376 bytes
SHA-256: 554afc258b36a4aa9eb342e08fd6712b3765733a5829df9996c48f9adb391632
font_01_sfnt_off0000db28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f33f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33F 10592 bytes
SHA-256: 629fb6f89354973443edf4d15e1567a357532101ea0b42359a08d3e5ac8db1aa