Malicious PDF — malware analysis report

Static analysis result for SHA-256 4789c65f685cf52e…

MALICIOUS

PDF

73.1 KB Created: 2021-11-12 16:25:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: dc40650bc1541469dc89da49796d7e57 SHA-1: d80baae088659a164dc301168a49be719df285a4 SHA-256: 4789c65f685cf52e4d82d0d49c1748884aa1a963a5a033c8cd97732afed19b85
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://pistant.ru/uplcv?utm_term=where+is+908+area+code+from PDF link annotation
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617b2434493a3---nonal.pdfIn PDF document text
    • http://tysons-cafe.com/uploads/files/30391155329.pdfIn PDF document text
    • http://asude.istanbul/ck_images/files/lumoxofogaputinegoxaveniw.pdfIn PDF document text
    • http://elard-group.com/ckfinder/userfiles/files/30835877036.pdfIn PDF document text
    • https://rachelrom.com/rescontent/file/23566490297.pdfIn PDF document text
    • http://gkz-crimea.ru/userfiles/file/81063454635.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/d9d6428cc95c58cafdb2e4cac22b1e11/11057368196.pdfIn PDF document text
    • https://drhuanghair.com/uploads/files/202109161417164687.pdfIn PDF document text
    • http://onlinetalk.jp/app/webroot/img/fckfiles/file/rafitevitonofenuva.pdfIn PDF document text
    • http://nfraccon.org/userfiles/file/57476235895.pdfIn PDF document text
    • https://opremazabebe.me/userfiles/file/36620038087.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1635544437.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/j3m2q2fmjl9bbjubgis1l87cl5/20735225430.pdfIn PDF document text
    • http://konakelektrik.com/userfiles/file/vonorizefiresokupomubise.pdfIn PDF document text
    • https://purmoradiatoriai.lt/images/files/xudefex.pdfIn PDF document text
    • http://smsalumni1971.com/apadmin/uploads/userfiles/files/saviwodafifejudib.pdfIn PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/59890811553.pdfIn PDF document text
    • http://fpempresa.cen.es/userfiles/files/63273925087.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/12896574551.pdfIn PDF document text
    • https://ofertaromania.ro/ckfinder/userfiles/files/gobidifapomat.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/womaxikowazavazis.pdfIn PDF document text
    • http://rpsbchamber.org/editorData/file/53761980514.pdfIn PDF document text
    • http://j1ent.com/userfiles/file/20211103145256.pdfIn PDF document text
    • https://vanchuyenduongsat.vn/upload/files/38649028491.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_off0000b720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB720 10984 bytes
SHA-256: 81fb0186789376f4c285f7e854c08ce0af64f452d519e92022bc4d81bbe99ed2
font_01_sfnt_off0000d0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B1 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_02_sfnt_off0000e7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D2 17976 bytes
SHA-256: 4fe54bdd5d0a24733b01d012766c6c0b24244e32bd3fc10c1f408725199fce7f